Previous post Next post

Coronavirus: latest antibody study suggests 10.8 percent of Geneva infected in first wave

© Eduard Goricev |

© Eduard Goricev |

A recently published update to the ongoing study in Geneva to assess the extent of SARS-CoV-2 infection suggests 10.8% of the population may have been infected in the first wave of infections.

The study, which tests a sample of the population over time for IgG SARS-CoV-2 antibodies, started in early April 2020. The latest figures come from the fifth week of testing, which was concluded on 9 May 2020.

In the first week, 4.8% tested positive for antibodies, a figure that rose to 8.5% and 10.9% in the second and third weeks. In the fourth week the rate fell to 6.6% before rising to 10.8% in the fifth week. The report doesn’t explain why the percentage fell to 6.6% in the fourth week, however it suggests the results should be interpreted with caution.

By 9 May 2020, Geneva had brought the spread of the virus under control – only 82 new infections were recorded between 9 May and 9 June 2020.

If accurate, the recent antibody percentage of 10.8% suggests the infection rate is roughly 11 times higher than the recorded case figure. This would mean 89.2% of Geneva’s population avoided infection during the first wave.

Among participants over 65, 4.1% tested positive for IgG SARS-CoV-2 antibodies, a figure suggesting that 95.9% of this group avoided infection.

If the most recent antibody test results are used to calculate infection rates, the implied population-wide infection fatality rate in Geneva is 0.5%, while the rate for those over 65 is around 8.0%.

Full story here Are you the author?
About Le News
Le News
The newspaper Le News is a free, quality, local English language newspaper launched on 31 October 2013. Le News fills a gap in local Swiss media for the numerous English-speakers living and visiting Switzerland. In late January 2015 we decided to put our print medium on hold and focus on our digital media presence.
Previous post See more for 3) Swiss Markets and News Next post
Tags: ,,,,,,

Permanent link to this article:

Leave a Reply

Your email address will not be published.

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>

This site uses Akismet to reduce spam. Learn how your comment data is processed.