WEEKLY BULLETIN ON OUTBREAKS
AND OTHER EMERGENCIES
Week 43: 18 - 24 October 2021
Data as reported by: 17:00; 24 October 2021
...
Meningitis Democratic Republic of the Congo
(Tshopo Province)
2 395 Cases
200 Death
8.4% CFR
EVENT DESCRIPTION
On 7 September 2021, the Democratic Republic of the Congo
declared a meningitis outbreak following laboratory confirmation by
the Pasteur Institute of Paris in France. Preliminary investigations
started after suspected cases and deaths of a meningococcal illness
were reported in two mining areas along the Aruwimi River known
as Carrière Wabelo and Intervention Rapide in the Panga health area
of Banalia health district located at north of Kisangani, the capital of
Tshopo province.
As of 23 October 2021, a total of 2 395 suspected meningitis
cases, including 14 confirmed and 200 deaths (case fatality ratio =
8.4%), have been reported in Banalia health district. Among these
cases, 32.0% (764/2 395) are aged between 15 - 45 years. The case
fatality ratio has decreased significantly from 100% at the onset
of the outbreak (week 20 ending 23 May 2021) to 8.4% at week
42 (ending 24 October 2021). This decrease would be a result of
intensified community sensitization for early health seeking behavior
by suspected cases and the improvement of case management
practices. Out of the suspected 2 395 cases, 313 (13.0%) reported
history of vaccination during the preventive vaccination campaign
against meningitis serotype A with MenAfriVac vaccine that took
place in the Tshopo province in May 2016.
There are currently 35 patients under medical care in five health
centers, while 70 patients are undergoing outpatient treatment in
Banalia health district. Psychosocial support has been provided to five
admitted patients and their relatives at the Banalia referral hospital.
Since the onset of the outbreak, 175 laboratory samples have been
collected for investigation from suspected cases, including 145
patients for cerebrospinal fluid (CSF) and blood samples, 11 patients
for CSF only, and 19 patients for blood only. A total of 67 CSF samples
were analyzed and results confirmed 14 positives: 13 for Neisseria
meningitidis serotype W (six samples by culture, seven samples
by real time polymerase chain reaction (RT-PCR)) and one for
Haemophilus influenza (by culture), giving a positivity rate of 21%.
The outbreak remains limited in the Banalia health district and all
the 20 health areas have notified at least one suspected case of
meningitis. A total of 16 health areas out of 20 (80%) are still active
and four health areas of Akuma, Alolo, Babise and Zambeke were in
alert by week 41 (ending 17 October 2021).
Reactive vaccination campaign started on 9 October 2021 and a
total of 153 052 people were vaccinated so far, giving a coverage of
104.1% of the targeted population in the entire Banalia health district.
This vaccination coverage is not uniform for all health areas of the
Banalia health district and ranges from 79.5% to 172.4%, due to the
fact that the vaccination campaign did not start at the same date in
all health areas.
PUBLIC HEALTH ACTIONS
A reactive vaccination campaign against meningitis, with vaccine
containing meningococcal W antigen, is ongoing.
The local committee for the management of health emergencies
is conducting regular meetings to coordinate response at the
province as well as in Banalia health zone.
Strengthening of community-based surveillance is underway.
Continuation of in-depth investigations at community level in the
affected health district of Banalia as well as in the other at-risk
neighbouring health districts including Bengamisa and Tshopo
health districts
Active search for contacts and suspected cases in the mining
quarries and in the community is ongoing.
Provincial rapid response teams have been deployed to conduct
investigations and organise mobile clinics to conduct case
management, sample collection and infection prevention and
control (IPC) measures in the affected areas.
Enhanced case management activities including supplying
of additional 5 000 doses of Ceftriaxone by the International
Coordination Group (ICG) to reinforce the antibiotic stock has
been done.
Implementation of risk communication activities is ongoing.
Laboratory capacities at the Tshopo province have been
enhanced with ability to perform RT-PCR testing
SITUATION INTERPRETATION
A meningitis outbreak is currently ongoing in the Democratic
Republic of the Congo. Efforts have been made to significantly
reduce the CFR through improved case management, but the delay
in confirming the outbreak affected the rapid implementation of
control measures. Difficult access to the affected areas remains one
of the major challenges for the management of this outbreak. An
improved coordination mechanism would greatly help the response
and could potentially lead to control as stakeholders pull resources
especially for surveillance and vaccination.
...
https://apps.who.int/iris/bitstream/handle/10665/347061/OEW43-1824102021.pdf