Cameroon - corrected errors arising from cases reported but then later retracted by ECDC, and recalculated knock on effects on cumulative cases, AR and CFR for Cameroon from 11th June 2020
All countries and Western Africa Region - recalculated knock on effects on daily cases, cumulative cases, AR and CFR arising from the errors in the Cameroon
time series noted above.
(Entered 13-Dec-2020)
Mauritania - 1) adjusted NC to correct retracted errors from ECDC
database (from 13th May) and add unreported cases from 3rd to 7th December
inclusive. Recalculated knock on effects on cumulative cases, AR and CFR
for Mauritania from this date
All countries and Western Africa Region - recalculated knock on effects on daily cases, cumulative cases, AR and CFR arising from the errors in the
Mauritania time series noted above.
Mauritania - added 17 deaths from 2nd to 7th December, reported in the JH time
series but not in the final days of the ECDC daily reports. Recalculated knock on effects on daily and cumulative deaths and CFR
All countries and Western Africa Region - recalculated knock on effects on daily and cumulative deaths and CFR arising from the errors in the Mauritania time
series noted above.
(Entered 14-Dec-2020)
Cameroon - a further 80 cases (reported but then retracted by ECDC) removed from the case records for 27th and 28th May. Cumulative cases, AR and CF
R recalculated from 28th May to 7th December. Case time series now aligned with Johns Hopkins data (Entered 14-Dec-2020)
All countries and Western Africa Region - recalculated knock on effects on
cumulative cases, AR and CFR arising from the errors in the Camerooon
time series noted above. (Entered 14-Dec-2020)
We made a further set of edits to daily new cases (ncDATE) to reconcile
remaining discrepancies between ECDC and JH time series. Most of these were
accounted for by ECDC having retrospectively retracted new cases that they had reported in error, or retrospectively reporting cases that they had missed.
They corrected the earlier part of the timeline, but did not issue any errata. JH had also made two retrospective changes to new cases reported from Eritrea at the beginning of January 2021. The corrections covered the period from 7/4/20 to 5/1/21. The 13 countries affected are Angola, Botswana, Comoros, Djibouti,
Eritrea, Guinea-Bissau, Ethiopia, Gabon, Ghana, Madagascar, Rwanda, South
Africa, Uganda. The changes are small, and the effect overall, on individual countries, and on timelines are minor. The full changes are detailed in the
Data File comments for the time series data set. The exact same changes to
daily new cases itemised there (comments dated 13th and 14th March 2021) have
also been made in this date set.
(Entered 14-Mar-2021)
The corrections to new cases have also affected cumulative cases, attack rates
and case fatality risk. Again, the effects are very small. These changes have
also been made to this data set, by running the syntax used originally to
generate these variables - cumulative cases (casesDATE), attack rate (arDATE)
and case fatality risk (cfrDATE)
Effects of corrections on aggregated data (all countries, western, central,
eastern and southern regions) also recalculated for new cases, cumulative
cases, attack rate and CFR
(Entered 15-Mar-2021)