4 ms·
There is no evidence for reinfection, people assumed it was that, but according to specialists it's more likely it works the same as with other viruses "THREAD
by pps 7y ago
There is no evidence for reinfection, people assumed it was that, but according to specialists it's more likely it works the same as with other viruses
"THREAD/1: We saw now several reports of reinfection and I wanted to talk a little about that. While immunity induced by SARS-CoV-1, MERS-CoV and human CoVs is not very long lived, an immune response is typically induced and antibodies persist for 1-3 years."
"2) Now, there is evidence that people with COVID19 mount an immune response (e.g. https://medrxiv.org/content/10.1101/2020.02.20.20025841v1 https://medrxiv.org/content/10.1101/2020.02.20.20025841v1). That makes re-infection, especially short-term extremely unlikely. What is more likely is, that the patient is still shedding virus but some of the tests were negative."
"3) Follow up tests can turn positive after a few negative tests, e.g. because sampling was better. Also, and this is a very important point, just because somebody still tests positive in a nucleic acid based test, does not mean they are still shedding infectious virus."
"4) E.g. Measles RNA can be detected for months in patients, long after infectious virus shedding has stopped. This is also the case for other viruses. And I think this is the most likely scenario here."
https://twitter.com/florian_krammer/status/1233338746789036032 https://twitter.com/florian_krammer/status/12333387467890360...
- Johnny555 7y agoOn the other hand, Japan said they found a clear case of reinfection: https://thehill.com/changing-america/well-being/prevention-cures/484942-japan-confirms-first-case-of-person-reinfected https://thehill.com/changing-america/well-being/prevention-c... You can debate whether or not it's really a reinfection or not, but no one is going to really know for sure until quite some time and further studies can be done. So for now, I wouldn't count on immunity after catching the disease.
- hatenberg 7y agoJapan may not be the best source for anything right now, their response is a bit in panic. I'd personally watch any publication from Singapore in this regard - one of their primary learnings from SARS was to become a biotech hub which enabled them to rapidly scale testing in this case and you can assume they have very good surveillance of existing cases.
- lokedhs 7y agoThe Singapore ministry of health site on the topic is really the model of what governments should do in these situations. https://www.moh.gov.sg/covid-19 https://www.moh.gov.sg/covid-19 They share details on all cases, along with the result of the investigation around whom they have been in contact with and where they have been. They also created a dashboard with all information: https://experience.arcgis.com/experience/7e30edc490a5441a874f9efe67bd8b89 https://experience.arcgis.com/experience/7e30edc490a5441a874...