Originally posted by aslyfox I wonder
are they more susceptible to being infected
or to succumbing to the infection and any subsequent complications such as pneumonia ?
does infection always lead to pneumonia ?
Given the seemingly high rate of people who test positive for having the virus but who are not symptomatic, it seems that everyone is susceptible (even children).
How sick they get varies a lot. The Chinese data suggested that about 80% have mild symptoms and 20% end up in the hospital with a 25% of those (5% of the total) needing ICU.
It's worth noting that COVID-19 can cause pneumonia directly and also cause severe scarring of the lungs. Pneumonia vaccines (which reduce the chance of bacterial pneumonia) won't prevent COVID-induced pneumonia. (In general, pneumonia is a lung condition with many causes and pneumonia vaccines only address a couple of those causes.)
The biggest caveat with all of the percentage data is the lack of frequent universal testing to really track what's going on. Lots of people might have COVID-19 (and possibly be spreading it) without knowing it. Lots of people are now sick with COVID-19 (and spreading it) with out getting tested because they don't meet the criteria for testing, And then there's the delay between someone getting sick, getting tested, getting the results of the test, and the government getting the data. Thus the "official" number only count a tiny fraction of the cases. There's even the issue that COVID deaths are now under-counted due to delays in paper work and lack of testing of people who die at home (or in nursing homes).