Can You Get H1N1 More Than Once?

[Flufreak]

Re: Can You Get H1N1 More Than Once?

http://www.sacbee.com/273/story/2252030.html

Well, how about this? See highlighted in red

C Davis pair confirm findings on seniors' immunity to swine flu
ShareThis
Buzz up!
By Anita Creamer
acreamer@sacbee.com
Published: Wednesday, Oct. 14, 2009 - 12:00 am | Page 3B

New research by a pair of UC Davis School of Veterinary Medicine scientists confirms previous theories that people 65 and older may be protected from the most serious effects of the novel H1N1 virus by many decades' worth of previous exposure to other flu viruses.

"The more you're exposed to viruses that can stimulate all types of immune response, the better protected you're likely to be," said Dr. Carol Cardona, a UC Davis veterinarian and Cooperative Extension specialist, who partnered in the research with Dr. Zheng Xing.

"There does seem to be some level of antibody protection that people over 65 seem to have. There are some good things about getting older."

The duo's findings will appear in the November edition of Emerging Infectious Diseases, a journal published by the Centers for Disease Control and Prevention.

In their research, Xing and Cardona surveyed data from earlier studies of the swine flu epidemic, identifying specific molecular sites � or epitopes � that strains of H1N1 found in California, New York and Texas share with the seasonal influenza A virus.

They theorize that those shared epitopes result in a degree of immunity to the new virus among people who have already been exposed to the seasonal flu, either through illness or through vaccination.

Their research also suggests that the epitopes involved with novel H1N1 exposure stimulate a kind of immunity in which T-cells attack and clear out pathogens. That's a different kind of immunity than one involving a protective antibody.

"It's really complicated, and it's hard to explain well in the media," said Cardona. "PacMan is the image that people generally use," she said in describing the kind of immunity she and Xing theorize. "But we're getting to the point where a lot of people don't know what PacMan is."

She cautions that people with some immunity may still come down with novel H1N1, but their symptoms are likely to be mild.

Both Xing and Cardona have also worked extensively in the past on avian flu research.

 

[North44]

Re: Can You Get H1N1 More Than Once?

What they are saying is, if one has accumulated antibody from other (seasonal) influenza viruses or vaccination, one may derive some protection against H1N1, although it may be incomplete. They did not say that people who have had H1N1 infection or H1N1 vaccination are at risk for a second infection.

 

[Niko]

Re: Can You Get H1N1 More Than Once?

A portion of the population is affected by each wave. Who and how many are determined by:
-virulence of the virus
-environmental/living conditions
-health of the individual/population
-degree of exposure (contact with others)
-luck

- transmissibility of the virus


I would recommend adding (in red)

I would add...

Stability/instability of the virus itself (ability to mutate, reassort, recombine)

Age distribution of the population

 

[North44]

Re: Can You Get H1N1 More Than Once?

I think we have pretty well flogged this thread to death

 

[gsgs]

Re: Can You Get H1N1 More Than Once?

but I'm still confused

 

[gsgs]

Re: Can You Get H1N1 More Than Once?

compare with RSV:

-----------------------

http://en.wikipedia.org/wiki/Human_respiratory_syncytial_virus
In temperate climates there is an annual epidemic during the winter months. In tropical climates, infection is most common during the rainy season.
In the United States, 60% of infants are infected during their first RSV season[1], and nearly all children will have been infected with the virus by 2-3 years of age[1]. Natural infection with RSV does not induce protective immunity, and thus people can be infected multiple times. Sometimes an infant can become symptomatically infected more than once even within a single RSV season

--------------------


so, why do RSV waves end ? Weather ?

 

[Snowy Owl]

Re: Can You Get H1N1 More Than Once?

I do not know if the Season dynamics is a manageable data because the new Season manifest itself locally in Vegetable, Animal, Social Behavior simultaneously.

Science has code season with the sun not with the Regional Truth Factual manifestation.

When I read and then study the Heat Wave of New-York in 19

TABLE 10.?Respiratory diseases. Primary admissions, officers and enlisted men, United States Army, by countries, April 1, 1917, to December 31, 1919. Absolute numbers and annual ratios per 1,000 strength

Looking at these datas
http://www.flutrackers.com/forum/showthread.php?t=12911&highlight=1915

From First Nations Witness, there is a time where nature shift suddenly and the new dynamic of the Season is in Motion.

Snowy

 

[gsgs]

Re: Can You Get H1N1 More Than Once?

that thread is soo long

seasonality of RSV and flu in Europe:

http://magictour.free.fr/eufr.JPG

RSV goes down when it's still cold, when flu goes up.
Must be immunity !?!?!

 

[North44]

Re: Can You Get H1N1 More Than Once?

compare with RSV:

-----------------------

http://en.wikipedia.org/wiki/Human_respiratory_syncytial_virus
In temperate climates there is an annual epidemic during the winter months. In tropical climates, infection is most common during the rainy season.
In the United States, 60% of infants are infected during their first RSV season[1], and nearly all children will have been infected with the virus by 2-3 years of age[1]. Natural infection with RSV does not induce protective immunity, and thus people can be infected multiple times. Sometimes an infant can become symptomatically infected more than once even within a single RSV season

--------------------


so, why do RSV waves end ? Weather ?

RSV is fairly unique in that the host does not develop immunity subsequent to infection. There are a number of factors as to why RSV and other viral infections are more common in the Fall and Winter months. Colder weather is one factor. Some viruses like colder noses to settle in. Probably the greatest factor is the start of the school year/daycare and increased crowding of people.

 

[North44]

Re: Can You Get H1N1 More Than Once?

that thread is soo long

seasonality of RSV and flu in Europe:

http://magictour.free.fr/eufr.JPG

RSV goes down when it's still cold, when flu goes up.
Must be immunity !?!?!

Am I losing my colour vision? Is there a red graph on this chart?
There are other factors that influence the "seasonality" of virus infections. Competition with other viruses, crowding, etc. Not likely to be immunity in this case, as the host does not develop immunity to RSV.

 

[Missouriwatcher]

Re: Can You Get H1N1 More Than Once?

Novavax Awarded NIH Grant for Respiratory Syncytial Virus (RSV) Vaccine Program
http://www.prnewswire.com/news-rele...ytial-virus-rsv-vaccine-program-64074657.html


"The 2006–2007 RSV seasons for Florida and for the South (excluding Florida), Northeast, Midwest, and West are summarized below.

* Florida: early July to late January
* South (excluding Florida): late October to late February
* Northeast: mid-November to early February
* Midwest: mid-November to mid-March
* West: mid-December to late March
It is not known why community RSV outbreaks occur when they do, but temperature, humidity, and other environmental factors are likely to contribute to the timing of outbreaks."
http://www.cdc.gov/Features/dsRSV/

 

[gsgs]

Re: Can You Get H1N1 More Than Once?

http://www.ncbi.nlm.nih.gov/pubmed/...nel.Pubmed_DefaultReportPanel.Pubmed_RVDocSum
Influenza A, RSV, and adenovirus were correlated with temperature and rhinovirus to relative humidity. In a time series model that included seasonal and climatic conditions, RSV-associated hospitalizations were predictable

http://www.ncbi.nlm.nih.gov/pubmed/...nel.Pubmed_DefaultReportPanel.Pubmed_RVDocSum
SUMMARYHong Kong has a subtropical climate and an influenza seasonality lying approximately mid-way (March-June) between those of the Northern (November-March) and Southern (June-September) hemispheres. Respiratory syncytial virus (RSV) shares a similar seasonality to that of influenza in Hong Kong and is another important respiratory infection of childhood. Daily virus incidence data from public hospitals in Hong Kong's New Territory East Cluster, together with Hong Kong climate data were obtained for 2000-2007. Statistical time-series analysis using monthly time windows showed that influenza A and RSV incidence increased with higher environmental relative humidity, whereas influenza B incidence decreased with higher environmental temperatures. The other climate variables (including vapour pressure as a measure of absolute humidity) were not significantly related to the incidence of these respiratory viruses. Data from this study further reinforces the concept that the relationship between climate factors and respiratory virus incidence differ between subtropical/tropical and temperate countries.




1 - 56 of 56
One page.
1:
Policy Statement--Modified Recommendations for Use of Palivizumab for Prevention of Respiratory Syncytial Virus Infections.
COMMITTEE ON INFECTIOUS DISEASES.
Pediatrics. 2009 Sep 7. [Epub ahead of print]
PMID: 19736258 [PubMed - as supplied by publisher]
Related Articles
2:
Comparative evaluation of real-time PCR and conventional RT-PCR during two year surveillance for Influenza and RSV among children with acute respiratory infections in Kolkata reveals distinct seasonality of infection.
Agrawal AS, Sarkar M, Chakrabarti S, Rajendran K, Kaur H, Mishra AC, Chatterjee MK, Naik TN, Chadha MS, Chawla-Sarkar M.
J Med Microbiol. 2009 Aug 27. [Epub ahead of print]
PMID: 19713363 [PubMed - as supplied by publisher]
Related Articles
3:
Estimating sensitivity of laboratory testing for influenza in Canada through modelling.
Schanzer DL, Garner MJ, Hatchette TF, Langley JM, Aziz S, Tam TW.
PLoS One. 2009 Aug 18;4(8):e6681.
PMID: 19688094 [PubMed - in process]
Related Articles Free article in PMC | at journal site
4:
Are meteorological parameters associated with acute respiratory tract infections?
du Prel JB, Puppe W, Gr?ndahl B, Knuf M, Weigl JA, Schaaff F, Schmitt HJ.
Clin Infect Dis. 2009 Sep 15;49(6):861-8.
PMID: 19663691 [PubMed - in process]
Related Articles
5:
Incidence of common respiratory viral infections related to climate factors in hospitalized children in Hong Kong.
Tang JW, Lai FY, Wong F, Hon KL.
Epidemiol Infect. 2009 Jul 27:1-10. [Epub ahead of print]
PMID: 19631018 [PubMed - as supplied by publisher]
Related Articles
6:
Distribution and seasonality of rhinovirus and other respiratory viruses in a cross-section of asthmatic children in Trinidad, West Indies.
Matthew J, Pinto Pereira LM, Pappas TE, Swenson CA, Grindle KA, Roberg KA, Lemanske RF Jr, Lee WM, Gern JE.
Ital J Pediatr. 2009 Jun 25;35(1):16. [Epub ahead of print]
PMID: 19555507 [PubMed - as supplied by publisher]
Related Articles Free article in PMC | at journal site
7:
Seasonality of Respiratory Viral Identification Varies With Age and Aboriginality in Metropolitan Western Australia.
Moore HC, de Klerk N, Richmond P, Keil AD, Lindsay K, Plant A, Lehmann D.
Pediatr Infect Dis J. 2009 Jul;28(7):598-603.
PMID: 19384260 [PubMed - as supplied by publisher]
Related Articles
8:
Incidence and clinical characteristics of the infection by the respiratory syncytial virus in children admitted in Santa Casa de S?o Paulo Hospital.
Pecchini R, Berezin EN, Fel?cio MC, Passos SD, Souza MC, Lima LR, Ueda M, Matsumoto TK, Durigon EL.
Braz J Infect Dis. 2008 Dec;12(6):476-9.
PMID: 19287833 [PubMed - indexed for MEDLINE]
Related Articles Free article at journal site
9:
Epidemiology of respiratory syncytial virus in various regions within North Carolina during multiple seasons.
Wilfret DA, Baker BT, Palavecino E, Moran C, Benjamin DK Jr.
N C Med J. 2008 Nov-Dec;69(6):447-52.
PMID: 19256181 [PubMed - indexed for MEDLINE]
Related Articles
10:
Influenza-associated morbidity in subtropical Taiwan.
Liao CM, Chang SY, Chen SC, Chio CP.
Int J Infect Dis. 2009 Sep;13(5):589-99. Epub 2008 Dec 25.
PMID: 19111494 [PubMed - in process]
Related Articles
11:
Biennial spring activity of human metapneumovirus in Austria.
Aberle SW, Aberle JH, Sandhofer MJ, Pracher E, Popow-Kraupp T.
Pediatr Infect Dis J. 2008 Dec;27(12):1065-8.
PMID: 18978517 [PubMed - indexed for MEDLINE]
Related Articles
12:
Evidence of a causal role of winter virus infection during infancy in early childhood asthma.
Wu P, Dupont WD, Griffin MR, Carroll KN, Mitchel EF, Gebretsadik T, Hartert TV.
Am J Respir Crit Care Med. 2008 Dec 1;178(11):1123-9. Epub 2008 Sep 5.
PMID: 18776151 [PubMed - indexed for MEDLINE]
Related Articles
13:
Seasonality of primary care utilization for respiratory diseases in Ontario: a time-series analysis.
Moineddin R, Nie JX, Domb G, Leong AM, Upshur RE.
BMC Health Serv Res. 2008 Jul 28;8:160.
PMID: 18662391 [PubMed - indexed for MEDLINE]
Related Articles Free article in PMC | at journal site
14:
Effect of climatological factors on respiratory syncytial virus epidemics.
Noyola DE, Mandeville PB.
Epidemiol Infect. 2008 Oct;136(10):1328-32. Epub 2008 Jan 4.
PMID: 18177520 [PubMed - indexed for MEDLINE]
Related Articles
15:
Respiratory syncytial virus infection and disease in infants and young children observed from birth in Kilifi District, Kenya.
Nokes DJ, Okiro EA, Ngama M, Ochola R, White LJ, Scott PD, English M, Cane PA, Medley GF.
Clin Infect Dis. 2008 Jan 1;46(1):50-7.
PMID: 18171213 [PubMed - indexed for MEDLINE]
Related Articles Free article in PMC | at journal site
16:
Respiratory syncytial virus seasonality in southeast Florida: results from three area hospitals caring for children.
Light M.
Pediatr Infect Dis J. 2007 Nov;26(11 Suppl):S55-9.
PMID: 18090202 [PubMed - indexed for MEDLINE]
Related Articles
17:
Diagnostic assays for respiratory syncytial virus disease.
Henrickson KJ, Hall CB.
Pediatr Infect Dis J. 2007 Nov;26(11 Suppl):S36-40. Review.
PMID: 18090198 [PubMed - indexed for MEDLINE]
Related Articles
18:
Role of influenza and other respiratory viruses in admissions of adults to Canadian hospitals.
Schanzer DL, Langley JM, Tam TW.
Influenza Other Respi Viruses. 2008 Jan;2(1):1-8.
PMID: 19453488 [PubMed - indexed for MEDLINE]
Related Articles
19:
Variation in timing of respiratory syncytial virus outbreaks: lessons from national surveillance.
Panozzo CA, Fowlkes AL, Anderson LJ.
Pediatr Infect Dis J. 2007 Nov;26(11 Suppl):S41-5.
PMID: 18090199 [PubMed - indexed for MEDLINE]
Related Articles
20:
Patterns of influenza infections among different risk groups in Brazil.
Bellei N, Carraro E, Perosa A, Granato C.
Braz J Infect Dis. 2007 Aug;11(4):399-402.
PMID: 17873992 [PubMed - indexed for MEDLINE]
Related Articles Free article at journal site
21:
Seasonality, incidence, and repeat human metapneumovirus lower respiratory tract infections in an area with a high prevalence of human immunodeficiency virus type-1 infection.
Madhi SA, Ludewick H, Kuwanda L, van Niekerk N, Cutland C, Klugman KP.
Pediatr Infect Dis J. 2007 Aug;26(8):693-9.
PMID: 17848880 [PubMed - indexed for MEDLINE]
Related Articles
22:
Clinical and molecular epidemiology of human bocavirus in respiratory and fecal samples from children in Hong Kong.
Lau SK, Yip CC, Que TL, Lee RA, Au-Yeung RK, Zhou B, So LY, Lau YL, Chan KH, Woo PC, Yuen KY.
J Infect Dis. 2007 Oct 1;196(7):986-93. Epub 2007 Aug 29.
PMID: 17763318 [PubMed - indexed for MEDLINE]
Related Articles
23:
Epidemiology of respiratory syncytial virus infection in northern Taiwan, 2001-2005 -- seasonality, clinical characteristics, and disease burden.
Lee JT, Chang LY, Wang LC, Kao CL, Shao PL, Lu CY, Lee PI, Chen JM, Lee CY, Huang LM.
J Microbiol Immunol Infect. 2007 Aug;40(4):293-301.
PMID: 17712463 [PubMed - indexed for MEDLINE]
Related Articles Free article at journal site
24:
Winter air pollution and infant bronchiolitis in Paris.
S?gala C, Poizeau D, Mesbah M, Willems S, Maidenberg M.
Environ Res. 2008 Jan;106(1):96-100. Epub 2007 Jun 21.
PMID: 17585899 [PubMed - indexed for MEDLINE]
Related Articles
25:
The contribution of respiratory pathogens to the seasonality of NHS Direct calls.
Cooper DL, Smith GE, Edmunds WJ, Joseph C, Gerard E, George RC.
J Infect. 2007 Sep;55(3):240-8. Epub 2007 Jun 20.
PMID: 17582503 [PubMed - indexed for MEDLINE]
Related Articles
26:
Understanding the transmission dynamics of respiratory syncytial virus using multiple time series and nested models.
White LJ, Mandl JN, Gomes MG, Bodley-Tickell AT, Cane PA, Perez-Brena P, Aguilar JC, Siqueira MM, Portes SA, Straliotto SM, Waris M, Nokes DJ, Medley GF.
Math Biosci. 2007 Sep;209(1):222-39. Epub 2006 Sep 5.
PMID: 17335858 [PubMed - indexed for MEDLINE]
Related Articles
27:
Risk factors for severe RSV-induced lower respiratory tract infection over four consecutive epidemics.
Rossi GA, Medici MC, Arcangeletti MC, Lanari M, Merolla R, Paparatti UD, Silvestri M, Pistorio A, Chezzi C; Osservatorio RSV Study Group.
Eur J Pediatr. 2007 Dec;166(12):1267-72. Epub 2007 Feb 17.
PMID: 17308898 [PubMed - indexed for MEDLINE]
Related Articles Free article in PMC | at journal site
28:
Hospitalization attributable to influenza and other viral respiratory illnesses in Canadian children.
Schanzer DL, Langley JM, Tam TW.
Pediatr Infect Dis J. 2006 Sep;25(9):795-800.
PMID: 16940836 [PubMed - indexed for MEDLINE]
Related Articles
29:
Seasonality of respiratory syncytial virus infection.
Waris M, White LJ.
Clin Infect Dis. 2006 Aug 15;43(4):541. No abstract available.
PMID: 16838247 [PubMed - indexed for MEDLINE]
Related Articles
30:
Modelling hospital admissions for lower respiratory tract infections in the elderly in England.
M?ller-Pebody B, Crowcroft NS, Zambon MC, Edmunds WJ.
Epidemiol Infect. 2006 Dec;134(6):1150-7. Epub 2006 May 26. Review.
PMID: 16729903 [PubMed - indexed for MEDLINE]
Related Articles
31:
Influenza-associated hospitalization in a subtropical city.
Wong CM, Yang L, Chan KP, Leung GM, Chan KH, Guan Y, Lam TH, Hedley AJ, Peiris JS.
PLoS Med. 2006 Apr;3(4):e121. Epub 2006 Mar 7.
PMID: 16515368 [PubMed - indexed for MEDLINE]
Related Articles Free article in PMC | at journal site
32:
Respiratory syncytial virus infections in northeastern Brazil: seasonal trends and general aspects.
Moura FE, Nunes IF, Silva GB Jr, Siqueira MM.
Am J Trop Med Hyg. 2006 Jan;74(1):165-7.
PMID: 16407363 [PubMed - indexed for MEDLINE]
Related Articles Free article at journal site
33:
Viral respiratory infection in Curitiba, Southern Brazil.
Tsuchiya LR, Costa LM, Raboni SM, Nogueira MB, Pereira LA, Rotta I, Takahashi GR, Coelho M, Siqueira MM.
J Infect. 2005 Dec;51(5):401-7. Epub 2005 Jan 21.
PMID: 16321652 [PubMed - indexed for MEDLINE]
Related Articles
34:
Diagnosis coding in The Danish National Patient Registry for respiratory syncytial virus infections.
Stensballe LG, Kristensen K, Nielsen J, Aaby P.
Scand J Infect Dis. 2005;37(10):747-52.
PMID: 16191894 [PubMed - indexed for MEDLINE]
Related Articles
35:
The transmission dynamics of groups A and B human respiratory syncytial virus (hRSV) in England & Wales and Finland: seasonality and cross-protection.
White LJ, Waris M, Cane PA, Nokes DJ, Medley GF.
Epidemiol Infect. 2005 Apr;133(2):279-89.
PMID: 15816153 [PubMed - indexed for MEDLINE]
Related Articles
36:
Seasonality and clinical features of human metapneumovirus infection in children in Northern Alberta.
Robinson JL, Lee BE, Bastien N, Li Y.
J Med Virol. 2005 May;76(1):98-105.
PMID: 15778961 [PubMed - indexed for MEDLINE]
Related Articles
37:
Seasonality of invasive pneumococcal disease: temporal relation to documented influenza and respiratory syncytial viral circulation.
Talbot TR, Poehling KA, Hartert TV, Arbogast PG, Halasa NB, Edwards KM, Schaffner W, Craig AS, Griffin MR.
Am J Med. 2005 Mar;118(3):285-91.
PMID: 15745727 [PubMed - indexed for MEDLINE]
Related Articles
38:
Respiratory viruses seasonality in children under five years of age in Buenos Aires, Argentina: a five-year analysis.
Viegas M, Barrero PR, Maffey AF, Mistchenko AS.
J Infect. 2004 Oct;49(3):222-8.
PMID: 15337339 [PubMed - indexed for MEDLINE]
Related Articles
39:
Seasonality of long term wheezing following respiratory syncytial virus lower respiratory tract infection.
Bont L, Steijn M, Van Aalderen WM, Brus F, Th Draaisma JM, Van Diemen-Steenvoorde RA, Pekelharing-Berghuis M, Kimpen JL.
Thorax. 2004 Jun;59(6):512-6.
PMID: 15170037 [PubMed - indexed for MEDLINE]
Related Articles Free article in PMC | at journal site
40:
Occurrence of respiratory virus: time, place and person.
Monto AS.
Pediatr Infect Dis J. 2004 Jan;23(1 Suppl):S58-64. Review.
PMID: 14730271 [PubMed - indexed for MEDLINE]
Related Articles
41:
Clinical impact and diagnosis of human metapneumovirus infection.
van den Hoogen BG, Osterhaus DM, Fouchier RA.
Pediatr Infect Dis J. 2004 Jan;23(1 Suppl):S25-32. Review.
PMID: 14730267 [PubMed - indexed for MEDLINE]
Related Articles
42:
The natural history of respiratory syncytial virus infection in cancer and transplant patients: implications for management.
Anaissie EJ, Mahfouz TH, Aslan T, Pouli A, Desikan R, Fassas A, Barlogie B.
Blood. 2004 Mar 1;103(5):1611-7. Epub 2003 Oct 2.
PMID: 14525792 [PubMed - indexed for MEDLINE]
Related Articles Free article at journal site
43:
Epidemiology and seasonality of respiratory tract virus infections in the tropics.
Shek LP, Lee BW.
Paediatr Respir Rev. 2003 Jun;4(2):105-11. Review.
PMID: 12758047 [PubMed - indexed for MEDLINE]
Related Articles
44:
Respiratory syncytial virus epidemics: the ups and downs of a seasonal virus.
Stensballe LG, Devasundaram JK, Simoes EA.
Pediatr Infect Dis J. 2003 Feb;22(2 Suppl):S21-32. Review.
PMID: 12671449 [PubMed - indexed for MEDLINE]
Related Articles
45:
The seasonality of rhinovirus infections and its implications for clinical recognition.
Monto AS.
Clin Ther. 2002 Dec;24(12):1987-97. Review.
PMID: 12581541 [PubMed - indexed for MEDLINE]
Related Articles
46:
Seasonality of respiratory syncytial virus-positive hospitalizations in children in Kiel, Germany, over a 7-year period.
Weigl JA, Puppe W, Schmitt HJ.
Infection. 2002 Aug;30(4):186-92.
PMID: 12236558 [PubMed - indexed for MEDLINE]
Related Articles
47:
Contribution of RSV to bronchiolitis and pneumonia-associated hospitalizations in English children, April 1995-March 1998.
M?ller-Pebody B, Edmunds WJ, Zambon MC, Gay NJ, Crowcroft NS.
Epidemiol Infect. 2002 Aug;129(1):99-106.
PMID: 12211603 [PubMed - indexed for MEDLINE]
Related Articles
48:
Viral etiology of acute respiratory infections among children in Porto Alegre, RS, Brazil.
Straliotto SM, Siqueira MM, Muller RL, Fischer GB, Cunha ML, Nestor SM.
Rev Soc Bras Med Trop. 2002 Jul-Aug;35(4):283-91.
PMID: 12170321 [PubMed - indexed for MEDLINE]
Related Articles Free article at journal site
49:
An update on respiratory syncytial virus epidemiology: a developed country perspective.
Law BJ, Carbonell-Estrany X, Simoes EA.
Respir Med. 2002 Apr;96 Suppl B:S1-7.
PMID: 11996399 [PubMed - indexed for MEDLINE]
Related Articles
50:
Epidemiology of respiratory syncytial virus infection among paediatric patients in Hong Kong: seasonality and disease impact.
Chan PK, Sung RY, Fung KS, Hui M, Chik KW, Adeyemi-Doro FA, Cheng AF.
Epidemiol Infect. 1999 Oct;123(2):257-62.
PMID: 10579445 [PubMed - indexed for MEDLINE]
Related Articles
51:
Acute lower respiratory infections due to respiratory syncytial virus and adenovirus among hospitalized children from Argentina.
Videla C, Carballal G, Misirlian A, Aguilar M.
Clin Diagn Virol. 1998 May 1;10(1):17-23.
PMID: 9645999 [PubMed - indexed for MEDLINE]
Related Articles
52:
Continuous non-seasonal epidemic of respiratory syncytial virus infection in the southeast United States.
Halstead DC, Jenkins SG.
South Med J. 1998 May;91(5):433-6.
PMID: 9598849 [PubMed - indexed for MEDLINE]
Related Articles
53:
Surveillance of community-acquired viral infections due to respiratory viruses in Rhone-Alpes (France) during winter 1994 to 1995.
Lina B, Valette M, Foray S, Luciani J, Stagnara J, See DM, Aymard M.
J Clin Microbiol. 1996 Dec;34(12):3007-11.
PMID: 8940439 [PubMed - indexed for MEDLINE]
Related Articles Free article in PMC | at journal site
54:
Community-acquired infections among children in an urban environment: a 2-year prospective study in Liverpool, U.K.
Shears P, Wright A.
J Infect. 1995 Mar;30(2):173-7.
PMID: 7636287 [PubMed - indexed for MEDLINE]
Related Articles
55:
Viral pneumonia in the first month of life.
Abzug MJ, Beam AC, Gyorkos EA, Levin MJ.
Pediatr Infect Dis J. 1990 Dec;9(12):881-5.
PMID: 2177540 [PubMed - indexed for MEDLINE]
Related Articles
56:
Chlamydia pneumoniae strain TWAR, Mycoplasma pneumoniae, and viral infections in acute respiratory disease in a university student health clinic population.
Thom DH, Grayston JT, Wang SP, Kuo CC, Altman J.
Am J Epidemiol. 1990 Aug;132(2):248-56.

 

[madgirl9876]

Re: Can You Get H1N1 More Than Once?

Novavax Awarded NIH Grant for Respiratory Syncytial Virus (RSV) Vaccine Program
http://www.prnewswire.com/news-rele...ytial-virus-rsv-vaccine-program-64074657.html


"The 2006?2007 RSV seasons for Florida and for the South (excluding Florida), Northeast, Midwest, and West are summarized below.

* Florida: early July to late January
* South (excluding Florida): late October to late February
* Northeast: mid-November to early February
* Midwest: mid-November to mid-March
* West: mid-December to late March
It is not known why community RSV outbreaks occur when they do, but temperature, humidity, and other environmental factors are likely to contribute to the timing of outbreaks."
http://www.cdc.gov/Features/dsRSV/

There is a RSV 'vaccine' but it isn't like a normal vaccine. It does not create long lasting immunity. It has to be given every month during season to prevent or reduce severity of infection.

http://www.synagis.com/

I had preemies.

 

[Missouriwatcher]

Re: Can You Get H1N1 More Than Once?

So, madgirl9876, how long do your kids have to continue with vax?

 

[Legadillo]

Re: Can You Get H1N1 More Than Once?

Thank YOU ROEHL JC for finding this story!! The same thing happened to my son and I, which is why I began the thread. :tiphat:

W. Va. doctor says she's caught H1N1 twice now

CROSS LANES, W.Va.--A Cross Lanes pediatrician says she came down with swine flu twice in two months, and she's among the medical professionals who are puzzled by the occurrence.

Dr. Debra Parsons, a pediatrician at Kid Care West in Cross Lanes, said both she and her son came down with identical flu-like symptoms in August.

Figuring they had the same disease, Parsons swabbed herself and sent the specimen off to a lab. She tested positive for Influenza A, which includes several strains of the flu.

Health officials say that in this region more than 99 percent of people who have been testing positive for Influenza A are later confirmed to have swine flu.

Parsons said that was the case with her family; a more specific follow-up "sub-typing" test at the state lab confirmed she had H1N1.

Parsons and her son recovered from the symptoms but in October they struck again and were much worse, she said. Both had body aches, fever, chills, wheezing, and shortness of breath.

This time Parsons swabbed both herself and her son, and both tests came back positive for Influenza A. She said she pushed for further testing to determine the strain, and the lab ran an immunofluorescence test on the specimens. They again tested positive for H1N1, she said.

Parsons' second swab was sent to the state lab Wednesday for even further testing and results should be returned in a couple of days or sent to the Centers for Disease Control for follow-up tests, she said.

When the initial test came back positive again, Parsons said she also contacted the CDC to see if it's possible for someone to contact the swine flu twice.

She said officials at the CDC told her Saturday that it is possible

But in public statements issued in late October the CDC said people who have had H1N1 don't need to get the vaccine because they can't contract the virus again.

Parsons said she's struggling to make sense of her diagnoses and reconcile them with other information she has heard.

"I don't want to mislead anybody," Parsons said. "I've been a doctor here 13 years, and I have a ton of patients, and I want to know what to tell them."

She said her office is doing 10 to 20 flu tests every day as more and more patients come in with symptoms.

Dr. Rahul Gupta, director of the Kanawha-Charleston Health Department, said Wednesday he is unaware of any evidence that a person can contract H1N1 twice.

"I'm aware of no data or scientific body of research or case reports in the medical or scientific world of an individual acquiring the 2009 H1N1 influenza twice," he said.

John Law, spokesman for the Department of Health and Human Resources, said the information his agency has is that the likelihood of getting the virus twice is "very, very, very rare."

"Once you have had it, you have a natural immunity to it. It's like the mumps or the chicken pox," Law said.

Gupta said he is trying to get in touch with the CDC to make a further inquiry, and Parsons said she also is trying to follow up with the federal agency.

Gupta said nothing right now would lead him to believe the virus has mutated.

"There is absolutely no evidence to assert that," he said. "In fact, (Center for Disease Control director) Dr. Tom Frieden has issued a press release...and he states that the virus is genetically stable. I believe him."

Gupta questioned the possibility that a test might have been botched.

"There's always a likelihood that they can be false positive," he said.

Parsons said her initial swine flu diagnosis came from a preliminary chain reaction test from the state lab that she said is one of the most accurate.

In the meantime, Parsons has seen her physician and is treating the minor flu symptoms that remain. She said she's rescheduled many of her patients' appointments until she's completely on the mend.

"For their good and mine," she said.

Contact writer Zack Harold at 304-348-7939 or


http://www.dailymail.com/News/200911041062

 

[Tonka]

Re: Can You Get H1N1 More Than Once?

As i've said in previous posts, I believe my family and I have had it a few times. April, July and September. We just returned from a month and a half long trip to California where many were sick. The plane home was full of sick people, even a 3 yr old with "the cough" behind us..its been 2 weeks with no illness.

Seems there is a good chance of some immunity now..

 

[Niko]

Re: Can You Get H1N1 More Than Once?

Thank YOU ROEHL JC for finding this story!! The same thing happened to my son and I, which is why I began the thread. :tiphat:

W. Va. doctor says she's caught H1N1 twice now

CROSS LANES, W.Va.--A Cross Lanes pediatrician says she came down with swine flu twice in two months, and she's among the medical professionals who are puzzled by the occurrence.




http://www.dailymail.com/News/200911041062

SO...if being infected and successfully fighting off the infection does not build sufficient antibodies to prevent reinfection, what implications this have for the vax?

 

[tropical]

Re: Can You Get H1N1 More Than Once?

Thank You very much Roehl,

and thanks Legadillo, and the other FT's who from the begining said they have suspect, or confirmed, multiple infections from flu bugs.

Now it is important to understand if the pandemic flu vaccine (as speculated in other threads) could rise other body immune resources, more heavier (because non-ilnessed, only activate the immunity) with the usage of a vaccine,
or it will be stil not enaugh to divert multiple infections.
There were prior posts about at FT.

Additionaly, there were early reports from Mexico, of several flu strains roaming jointly, at the time.
The same multiple flu bugs infections seems now unleashed in Ucraina / India / ../.

There are stil questions to be answered.

But at least, now we know (as many professionals /.../ stated),
that flu parties are not good, but harming.

The possible harm from pandemic vacs, or sheding virus from inhalers vaccs, is another question.

___

#157:

Parsons said that was the case with her family; a more specific follow-up "sub-typing" test at the state lab confirmed she had H1N1.

Parsons and her son recovered from the symptoms but in October they struck again and were much worse, she said. Both had body aches, fever, chills, wheezing, and shortness of breath.

This time Parsons swabbed both herself and her son, and both tests came back positive for Influenza A. She said she pushed for further testing to determine the strain, and the lab ran an immunofluorescence test on the specimens. They again tested positive for H1N1, she said.

 

[gsgs]

Re: Can You Get H1N1 More Than Once?

let people report online to CDC when they think they had it twice.
Collect the data and do occasional tests, whether they reported correctly

 

[Legadillo]

Re: Can You Get H1N1 More Than Once?

THANKS RoRo for initially finding the article! Added it to this thread.

Woman cured of swine flu, falls prey to H1N1 again
Himanshu Bhatt, TNN 5 November 2009, 10:22pm IST|

SURAT: At least 100 positive swine flu cases were reported from Surat and 19 deaths till date. What has added to the worry of the health department
is the fear of recurrence of the disease in cured patients.

One such case has been reported in the city. A 35-year-old housewife from Nana Varacha was infected with H1N1 and was admitted for treatment in SMIMER in October first week.

She underwent the test and reported positive following which, the woman was put through full course of medication. She was released from the hospital after 10 days. However, she was readmitted with suspected swine flu last weekend and has been tested positive again. The woman was given the treatment again and was released from the hospital a few days ago.

"She had a mild infection and so was cured clinically and sent home," said Dr Hemant Desai, medical officer, Surat Municipal Corporation (SMC).

"This is a big worry. The second wave is likely to come in December January and we have no mechanism in place wherein cured patients can be tested and be absolutely certain that they would no longer be infected with H1N1," said a doctor treating swine flu patients in New Civil Hospital (NCH).

"We don't test the cured patients at the time of their release so the chances of recurrence are there," Dr Desai said.

Dr S Mulla, professor and head of the department of Microbiology, NCH, said, "We have no procedure in place for re-testing."

"Generally, a patient who is cured develops natural immunity towards the disease after undergoing the course of medication. However, he is likely to get some new infection that could again lead to recurrence of the disease,"Dr Desai added.

Meanwhile, there were no new positive cases reported from the city. There were at present seven patients who were receiving treatment in NCH for H1N1.

http://timesofindia.indiatimes.com/c...ow/5200909.cms