1/7 - “People who have already contracted coronavirus are as protected against reinfection as those who have received the best #COVID19 vaccines, according to a survey of 20,000 UK healthcare workers, the largest study in the world so far.”
ft.com/content/929ef3…
2/7 - “Public Health England regularly tested two matched groups of volunteers between June and November — 6,000 health workers who had previously been infected with coronavirus and 14,000 who had not.”
3/7 - “A comparison of infections in the 2 groups found that prior infection provided at least 83% protection against reinfection. It gave better than 94% protection against symptomatic #COVID19 , matching the figures for the most effective #COVID19 vaccines.”
4/7 - “Natural infection looks as good as a vaccine, which is very good news for the population. [...] It will give a level of immunity in the community that will reduce transmission.”
5/7 - “During the study 44 people in the previously infected group of 6,000 tested positive at least three months apart, suggesting that they had been “potentially reinfected”. But because genomic analysis was not available [...] they were not considered proven reinfections.”
6/7 - “The study data also suggested that people who had recovered from #COVID19 were less likely to transmit the virus to others unknowingly, because natural infection appeared to provide about 75% protection against asymptomatic reinfection.”
7/7 - “If you believe you already had the disease and are protected, you can be reassured it is highly unlikely you will develop severe infection but there is still a risk that you could acquire an infection and transmit to others.”

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More from @FLAHAULT

16 Jan
1/9 - “In the second wave we acquired much more evidence that schoolchildren are almost equally, if not more infected by SARS-CoV-2 than others.”
google.ch/amp/s/www.wsj.…
2/9 - “The problem is not that schools are unsafe for children,” Mr. Boris Johnson said last week. “The problem is schools may nonetheless act as vectors for transmission, causing the virus to spread between households.”
3/9 - “An antibody survey conducted by researchers in Geneva in May and December, using thousands of random samples, found that children of age 6 to 18 were getting infected as often as young adults. The study has yet to be peer reviewed.”
Read 9 tweets
16 Jan
1/21. Jan 16 to Jan 22-
Our #COVID19 daily epidemic forecasting for 209 countries/territories. Vaccine figures per country in summary tables.
Dashboard: renkulab.shinyapps.io/COVID-19-Epide…
Data source: coronavirus.jhu.edu & ourworldindata.org/coronavirus
Powered by @ISG_UNIGE & @SDSCdatascience Image
2/21. Denmark is landing towards its #COVID19 safety zone (R-eff=0.67), at medium levels of activity, still increasing in mortality at very high levels, for 7 more days. ImageImage
3/21. Switzerland is landing towards its #COVID19 safety zone (R-eff=0.80), at high levels of activity, decreasing in mortality while still at high levels, for 7 more days.

(more details in the link above) ImageImage
Read 24 tweets
16 Jan
1/9 - Switzerland -Jan 16 to 22-
The #COVID19 epidemic activity is improving in most cantons and mortality, although at high levels, is decreasing.
7 cantons detailed.
Data: zh.ch/de/politik-sta…
Dashboard: renkulab.shinyapps.io/COVID-19-Epide…
Powered by @ISG_UNIGE & @SDSCdatascience Image
2/9 - Valais is slowly landing towards its #COVID19 safety zone (R-eff=0.91), while remaining at high level of activity, plateauing at high levels of mortality, for 7 more days. ImageImage
3/9 - Geneva will be plateauing in its #COVID19 epidemic activity (R-eff=0.98), at high levels, with very low levels of mortality, for 7 more days. ImageImage
Read 10 tweets
15 Jan
1/21. Jan 15 to Jan 21-
Our #COVID19 daily epidemic forecasting for 209 countries/territories. Vaccine figures per country in summary tables.
Dashboard: renkulab.shinyapps.io/COVID-19-Epide…
Data source: coronavirus.jhu.edu & ourworldindata.org/coronavirus
Powered by @ISG_UNIGE & @SDSCdatascience Image
2/21. Denmark is quickly landing towards its #COVID19 safety zone (R-eff=0.61), at medium levels of activity, with still increasing very high levels of mortality, for 7 more days. ImageImage
3/21. Switzerland is landing towards its #COVID19 safety zone (R-eff=0.80), at high levels of activity, decreasing in mortality while still at high levels, for 7 more days. ImageImage
Read 24 tweets
14 Jan
1/21. Jan 14 to Jan 20-
Our #COVID19 daily epidemic forecasting for 209 countries/territories. Vaccine figures per country in summary tables.
Dashboard: renkulab.shinyapps.io/COVID-19-Epide…
Data source: coronavirus.jhu.edu & ourworldindata.org/coronavirus
Powered by @ISG_UNIGE & @SDSCdatascience Image
2/21. Denmark is landing towards its #COVID19 safety zone (R-eff=0.72), at medium levels of activity, with still increasing very high levels of mortality, for 7 more days. ImageImage
3/21. Switzerland is slowly landing towards its #COVID19 safety zone (R-eff=0.85), at high levels of activity, decreasing in mortality while still at high levels, for 7 more days. ImageImage
Read 24 tweets
14 Jan
1/10 - USA. Jan 14 to Jan 20-
The #COVID19 situation is plateauing at high levels of activity, and very high levels of mortality.
9 states detailed and analysis in:
renkulab.shinyapps.io/COVID-19-Epide…
Powered by @ISG_UNIGE & @SDSCdatascience Image
2/10 - Massachusetts will be slowly landing towards its #COVID19 safety zone (R-eff=0.85), at high levels, with very high levels of mortality, for 7 more days. ImageImage
3/10 - Vermont is experiencing a surge in its #COVID19 epidemic activity (R-eff=1.29), at high levels, with very high levels of mortality, for 7 more days. ImageImage
Read 12 tweets

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