COVID-19 is especially harsh on elderly people, and researchers think they know why – ABC News

Australian researchers have been investigating why elderly people respond so poorly to COVID-19, and theorise that it’s linked to their repeated exposure to other seasonal coronaviruses.
Key points:

• The research hypothesised that children saw SARS-CoV-2 as a new virus
• But older adults saw it as typical, seasonal coronavirus
• It found children’s immune systems could activate surrounding white blood cells to help clear the virus

There are seven types of coronaviruses that can infect people (including SARS-CoV-2,…

Click here to view the original article.