tetano
Editor, Senior Moderator
Sci Rep. 2018 Apr 4;8(1):5634. doi: 10.1038/s41598-018-23895-1.
[h=1]Risk Factors for Avian Influenza H9 Infection of Chickens in Live Bird Retail Stalls of Lahore District, Pakistan 2009-2010.[/h] Chaudhry M[SUP]1,[/SUP][SUP]2[/SUP], Rashid HB[SUP]3[/SUP], Angot A[SUP]4[/SUP], Thrusfield M[SUP]5[/SUP], Bronsvoort BMD[SUP]6[/SUP], Capua I[SUP]4,[/SUP][SUP]7[/SUP], Cattoli G[SUP]4,[/SUP][SUP]8[/SUP], Welburn SC[SUP]9,[/SUP][SUP]10[/SUP], Eisler MC[SUP]11[/SUP].
[h=3]Author information[/h]
[h=3]Abstract[/h] This study was conducted to identify risk factors associated with AIV infections in live bird retail stalls (LBRS) in Lahore District, Pakistan. A cross-sectional survey of LBRS was conducted from December 2009-February 2010 using two-stage cluster sampling based on probability proportional to size. A total of 280 oropharyngeal swab sample pools were collected from 1400 birds in 8 clusters and tested by qRT-PCR for the matrix (M) gene of type A influenza virus and HA gene subtypes H9, H5 and H7. Thirty-four (34) samples were positive for the M gene, of which 28 were also positive for H9. No sample was found positive for H5 or H7. Data for 36 potential risk factors, collected by questionnaire, were analyzed by survey-weighted logistic regression and prevalence odds ratios (OR) for associated risk factors were calculated. A final multivariable model identified three risk factors for H9 infection in LRBS, namely obtaining birds from mixed sources (OR 2.28, CI[SUB]95%[/SUB]: 1.4-3.7), keeping birds outside cages (OR 3.10, CI[SUB]95%[/SUB]: 1.4-7.0) and keeping chicken breeds other than broilers (OR 6.27, CI[SUB]95%[/SUB]: 1.7-23.2). Sourcing birds from dealers/wholesalers, keeping birds inside cages and avoiding mixing different breeds in cages could reduce the risk of H9 infections in LRBS.
PMID: 29618780 DOI: 10.1038/s41598-018-23895-1
[h=1]Risk Factors for Avian Influenza H9 Infection of Chickens in Live Bird Retail Stalls of Lahore District, Pakistan 2009-2010.[/h] Chaudhry M[SUP]1,[/SUP][SUP]2[/SUP], Rashid HB[SUP]3[/SUP], Angot A[SUP]4[/SUP], Thrusfield M[SUP]5[/SUP], Bronsvoort BMD[SUP]6[/SUP], Capua I[SUP]4,[/SUP][SUP]7[/SUP], Cattoli G[SUP]4,[/SUP][SUP]8[/SUP], Welburn SC[SUP]9,[/SUP][SUP]10[/SUP], Eisler MC[SUP]11[/SUP].
[h=3]Author information[/h]
[h=3]Abstract[/h] This study was conducted to identify risk factors associated with AIV infections in live bird retail stalls (LBRS) in Lahore District, Pakistan. A cross-sectional survey of LBRS was conducted from December 2009-February 2010 using two-stage cluster sampling based on probability proportional to size. A total of 280 oropharyngeal swab sample pools were collected from 1400 birds in 8 clusters and tested by qRT-PCR for the matrix (M) gene of type A influenza virus and HA gene subtypes H9, H5 and H7. Thirty-four (34) samples were positive for the M gene, of which 28 were also positive for H9. No sample was found positive for H5 or H7. Data for 36 potential risk factors, collected by questionnaire, were analyzed by survey-weighted logistic regression and prevalence odds ratios (OR) for associated risk factors were calculated. A final multivariable model identified three risk factors for H9 infection in LRBS, namely obtaining birds from mixed sources (OR 2.28, CI[SUB]95%[/SUB]: 1.4-3.7), keeping birds outside cages (OR 3.10, CI[SUB]95%[/SUB]: 1.4-7.0) and keeping chicken breeds other than broilers (OR 6.27, CI[SUB]95%[/SUB]: 1.7-23.2). Sourcing birds from dealers/wholesalers, keeping birds inside cages and avoiding mixing different breeds in cages could reduce the risk of H9 infections in LRBS.
PMID: 29618780 DOI: 10.1038/s41598-018-23895-1