| numberwang said: A study in Germany showed that 81% had preexisting T cell immunity against Covid-19. This might explain why Covid was DOA in Germoney. Researchers at University Hospital Tübingen in Germany studied the blood of 365 people, 180 of whom had had Covid-19 and 185 who hadn't. When the researchers exposed people's blood to SARS-CoV-2, the virus that causes Covid-19, people who had had the illness already produced the strongest immune response. But surprisingly, there was also an immune reaction in 81 per cent of the people (150) who had never had Covid-19. This, the scientists said, was because they had already been infected with one or more of the common cold coronaviruses known to infect humans - named OC43, 229E, NL63 and HKU1 - and their immune systems cross-reacted as a result. The reaction the researchers were studying is caused by T cells, which are a type of white blood cell that produce long-lasting protection from serious infection. https://www.researchsquare.com/article/rs-35331/v1 https://www.dailymail.co.uk/news/article-8475639/Catching-colds-protect-Covid-19-scientists-say.html |
So why is the death toll so high in the USA, Americans don't catch colds?
The WHO is lying to everyone?
https://www.ctvnews.ca/health/coronavirus/looking-for-the-covid-19-hotspots-ignore-the-countries-seeing-virus-resurgences-1.5066461
Although the overall virus situation continues to worsen in Southeast Asia and the western Pacific, most other regions have seen their share of the global caseload stay relatively steady over the past month. This has led to suggestions that there may be some sort of worldwide COVID-19 plateau happening.
Asked about that possibility at a press briefing on Thursday, WHO health emergencies chief Michael Ryan acknowledged that numbers have levelled off but warned against backing off on proven virus-fighting techniques. "We may just be in the eye of the storm, and we don't know it," he said. "Countries that have made progress, please retain that progress. You will lose that progress if you relent, if you become complacent."
Ryan noted that, with approximately 21.5 million cases of COVID-19 confirmed globally, only "a very small proportion of the world's population" has been exposed to the virus. "This virus has a long way to burn, if we allow it," he said.
Covid-19 had far less success in killing the elderly in Germany cause of cultural differences between Germany and Italy. Plus Italy made one fatal error where the grand parents stepped in to look after the kids (if not already living in) when the schools closed so the parents could keep working.
Death rates went down here when 'the light went on' and people were no longer allowed to work at multiple elderly homes while extra help was sent in to lock them down. What changed is that everyone is now aware who is at risk and those at risk have been in hiding, forming social bubbles with other people at risk while segregating themselves from the less careful. The problem with re-opening schools is that all these safe bubbles will be forced to mingle with the 'party' people.
For us, kids only see grandparents and one friend of another immunocompromised, self isolating, family, basically since March. I do groceries once a week, early since its more quiet and much less chance of any viral matter to build up. Mask, lots of hygiene, stay away from everyone, big high building, big air volume, low limit on people inside, in and out in half an hour.
Next, 2 kids to school, 30 hours a week each, 60 hours. 120 times the exposure time. (lunch breaks in the same room without masks)
Full classes in much smaller rooms, an order of magnitude difference in people per air volume.
So pretty much at least a 1200x increase in chance of bringing covid-19 home :/
