WEEKLY BULLETIN ON OUTBREAKS
AND OTHER EMERGENCIES
Week 39: 19 - 25 September 2022
Data as reported by: 17:00; 25 September 2022
...
Acute kidney injury secondary to Escherichia Coli infection Gambia
75 cases
50 Deaths
66.7% CFR
EVENT DESCRIPTION
On 1 August 2022, the Epidemic and Disease Control Unit of
the Ministry of Health in the Gambia reported an unusual event
detected at a Teaching Hospital. A nephrologist at that hospital
reported an unusual increased incidence of acute kidney injury
(AKI) of unknown aetiology. A case definition was developed
following which a retrospective analysis of hospital records was
conducted to 19 June 2022. This revealed additional cases, with
the index case traced to 4 July 2022.
As of 23 September 2022, at least 75 cases have been reported
among young children aged one month to seven years from six
of the seven health regions in the country: Western Region 1 (32
cases) and 2 (19 cases) (WR 1&2), Upper River Region (URR)
(13 cases), Lower River Region (LRR) (1 case), North Bank West
Region (NBWR) (1 case), and Central River Region (CRR) (4
cases). The remaining five cases are being classified. Most of the
cases (86%) are from three health regions (WR 1&2 and URR),
and over 80% were less than two years old. A total of 50 deaths
have been reported, resulting in a case fatality ratio of 66.7%.
The clinical features among the cases include fever followed
by anuria (in 81% of cases), vomiting (61%), diarrhoea (51%)
and cough (10%). The average duration of illness was nine days
(range 5-18 days). A laboratory test confirmed AKI in 40% of
children who had a kidney function test. In addition, of those who
had a complete blood count (40%) test done, the white blood
cell counts (predominantly granulocytes) was elevated in 60% of
cases, but normal in 40% of cases. and routine urine tests were
normal (dip stick and microscopy).
Stool samples from children with similar clinical symptoms
to AKI cases (fever, vomiting and diarrhoea) were negative for
rotavirus and Vibrio cholerae. However, 38 (61%) out of 62
stool samples (from children with similar clinical presentation
as AKI cases) tested positive for Escherichia Coli (E. coli.). Two
samples were positive for Shiga toxin- producing E. coli (O157).
Whole-genome sequencing of E. coli to identify lineage was also
done and is awaiting interpretation. Water quality assessment
tests conducted in household of children with AKI revealed the
presence of E. coli, but were negative for heavy metals including
mercury and lead. Additionally, increased nitrite levels mainly
in boreholes and one major national water source (Fajara) were
also reported. The 2018 Multiple Indicator Cluster Surveys also
revealed the presence of E. coli in all the water points tested.
Most of the children had received treatment before presenting
at the referral hospital. The most common medicine was an
antipyretic (40%), followed by antihistamine/antiemetic (7%) and
cough syrup (6%). Nine samples of medicines taken by the children
with AKI were sent for toxicological analysis. Results revealed
that two out of nine medicine samples (one brand of paracetamol
and one brand of promethazine) contained ethylene glycol, and
diethylene glycol plus ethylene glycol, respectively. Post-mortem
findings from two cases of AKI revealed findings consistent with
malnutrition and renal injury with no pathognomonic signs that
could be linked to a specific cause.
PUBLIC HEALTH ACTIONS
A case definition was developed by the Ministry of health
with support from the WHO for case detection and the
retrospective analysis of hospital records. The case definition
allowed more case detection and the communication to all
the regions on the event across the country
Laboratory investigation for samples (stool, bloods,
urine) collected from cases and toxicology assessment of
medicines taken were conducted
Measures to prevent food- and water-borne infections have
been disseminated
Supporting the capacity of Medicine Control Agency to
ensure effective regulatory oversight on medicines in the
country including market surveillance and control and
access to quality control laboratory is ongoing
The planning of an in-depth epidemiological investigation
to gather additional information to confirm the etiology and
assess potential contributing factors for the good definition
of prevention and control measures is ongoing.
SITUATION INTERPRETATION
Acute kidney injury in children particularly in developing countries
is associated with high mortality rates. Most countries including
the Gambia do not have proper and adequate human and material
resources to manage kidney disease requiring dialysis. This
is the first time an acute kidney injury outbreak is reported in
The Gambia. There is therefore an urgent need to identify the
definitive causative agent, so that adequate measures can be put
into place to prevent further cases as well as clinical progression
of cases to acute kidney injury.
https://extranet.who.int/iris/restricted/bitstream/handle/10665/363303/OEW39-1925092022.pdf