WEEKLY BULLETIN ON OUTBREAKS
AND OTHER EMERGENCIES
Week 4: 16 to 22 January 2023
Data as reported by: 17:00; 22 January 2023
...
Cholera Eastern Democratic Republic of the Congo
3 677 cases
15 Deaths
0.4% CFR
EVENT DESCRIPTION
Although cholera is endemic in the North-Kivu province of
the Democratic Republic of the Congo (DRC), an upsurge in
suspected cases of cholera above the epidemic threshold has
been observed in Nyiragongo and Karisimbi health zones (HZs) of
the same province. The upsurge started respectively from weeks
47 (ending 27 November) and 50 (ending18 December) of 2022.
In particular, the number of suspected cases of cholera in
Nyiragongo HZ increased from 51 cases in week 47 to 556 cases
(990% increase) in week 50 and 683 cases (1 239% increase) in
the last week of December 2022 (week 52).
Consequently, an outbreak of cholera was officially declared on
14 December 2022, after isolation of Vibrio cholerae in stools of
suspected cases of cholera in Nyiragongo HZ.
As of 19 January 2023, 3 677 suspected cases of cholera
including 15 deaths (CFR 0.4%) have been reported, including
3514 cases and 14 deaths (CFR 0.4%) in Nyiragongo HZ, and
163 cases and one death (CFR 0.6%) in Karisimbi HZ.
Since the beginning of the outbreak, an average of 500 and 60
cases are being notified weekly in Nyiragongo and Karisimbi HZs,
respectively. Almost 50% of these cases have been laboratoryconfirmed.
In Nyiragongo HZ, the 5-14 years represent the most affected
age group (33%), followed by the 1-4 years (29%) and the 15-29
years (17%); the under-one constitute almost 7% of cases. More
than 60% of cases present with dehydration, in either moderate
(28.6%) or severe (32.1%) form.
A total of 14 health areas including eight in Nyiragongo
(Kanyaruchinya, Kibati, Kibumba, Kiziba, Mudja, Munigi, Ngangi
III, and Turunga) and six in Karisimbi (Baraka, Bujovu, Kasika,
Katoyi, Methodiste, and Mugunga) have so far been affected. In
Nyiragongo HZ, Kanyaruchinya is the epicentre of the outbreak,
with 73.6% (n=2 586 cases) of cases, followed by Munigi (574
cases; 16.3%) and Kibati (266 cases; 7.6%). In Karisimbi HZ,
almost 60% of cases have been reported from Methodiste health
area.
The cholera outbreak follows a massive influx of internally
displaced populations (IDPs) in Nyiragongo, Karisimbi and other
HZs of North-Kivu province, as a consequence of intense armed
conflicts between DRC security and defence forces and the nonstate armed group.
As a result, more than 450 857 IDPs have abandoned their
homes and livelihood, of whom around 53.4% (240 579 IDPs)
have settled in Nyiragongo, either in IDP camps (235 111 IDPs;
97.7%) or in host communities, as of 6 December 2022.
These IDP sites do not meet the standards and are characterized
by overcrowding, poor hygiene and sanitation conditions,
very limited access to drinking water, latrines and basic health
services. IDPs represent more than 90% of cases in Nyiragongo
HZ, and almost 40% of cases in Karisimbi HZ. However, there is an
extension of the outbreak out of IDP sites within the community,
with almost 10% and 60% of cases which originate from host
communities, respectively in Nyiragongo and Karisimbi HZs.
.
PUBLIC HEALTH ACTIONS
Coordination
The outbreak has been officially declared by the North-Kivu
Governor.
A multi-sectorial coordination mechanism has been set-up
at provincial level and daily coordination meetings are being
held in Kaniyarucinya (Nyiragongo).
An incident management system has been activated at the
Goma WHO sub-office.
A number of partners are actively involved in response
activities including WHO, UNHCR, IOM, MSF, UNICEF, WFP,
GRAM, MEDAIR, JOHANNITER, and Save the Children.
A costed strategic preparedness and respons plan is
available.
A coordination meeting has been put in place at national
level to prepare the reactive oral cholera vaccination (OCV)
campaign planned for end of January 2023.
Surveillance and laboratory
Surveillance activities are ongoing, including field
investigations, active case finding, alert notification and
investigation, and contact tracing and follow-up. On 19
January, 382 alerts were received including three community
deaths; of these, 365 alerts (95.5%) were investigated and
335 alerts (91.8%) were validated as suspected cases of
cholera.
Surveillance kits have been provided to teams on ground.
IT kits have been granted to information management
teams, and support is being provided for data entry and
management.
Community health workers have been briefed on the
community-based surveillance of cholera.
Case management and psychosocial support
A total of 34 rehydration points have been put in place and
are currently operational. In addition, six case management
units are functional including four cholera treatment units
(CTUs), one each in Kibati, Kanyaruchinya, Kahembe, and
Don Bosco, and two cholera treatment centres (CTCs), one
each in Munigi and Kiziba. The total bed capacity is of 205
beds.
Infection, prevention an
IPC interventions are being carried-out both in health care
facilities (HCFs) and in the community.
Twelve priority HCFs have been identified including eight in
Nyiragongo and four in Karisimbi.
Health care workers are being briefed on cholera preventive
measures, and IDPs are educated on the importance and
practice of hand washing.
The grid approach (household decontamination) has been
set-up in IDP sites and grid teams have been deployed on
ground, accordingly.
Water supply is being closely monitored.
Risk communication and community engagement
Community engagement activities are ongoing, targeting
traditional authorities and community leaders.
Mass sensitization, educational talks and household visits
are ongoing in all affected areas.
Messages on the importance of vaccination are under
development.
Operations support and logistics
Case management kits and other materials are being
provided in CTUs/CTCs.
IPC kits are also being made available both in CTUs/CTCs
and other HCFs, and in the community.
The expansion of Don Bosco CTU is ongoing.
Vaccination
A reactive OCV campaign is in preparation, scheduled for 25
January 2023, in 11 health areas of Nyiragongo HZ and one
health area of Karisimbi HZ, targeting both IDPs and host
communities.
Vaccines have already arrived in Kinshasa and are now being
distributed to Goma.
SITUATION INTERPRETATION
The ongoing cholera outbreak has resulted from a massive influx
of IDPs in Nyiragongo and other territories, due to ongoing
armed conflicts opposing DRC security and defence forces. The
likelihood of the situation getting worse is high if the conflict
continues to intensify over time with more people arriving in
IDP camps. Although the CFR remains low, the proportion of
moderate and severe cases is concerning, perhaps inferring late
detection and referral of cases. Additionally, there is a high risk
of further spread of the disease to other HZs and provinces of the
country, given population movements due to the ongoing crisis,
poor WASH conditions and very limited access to health care
services in those areas, and the current rainy season. There is
also a major risk of spread to neighbouring countries considering
population movements between DRC and Rwanda or Uganda.
Cross-border collaboration and surveillance should be enhanced,
accordingly.
https://apps.who.int/iris/bitstream/handle/10665/365707/OEW04-1622012023.pdf