Because the vast majority of these patients were old, and the elderly often have lasting symptoms from any serious infection. Any viral infection can cause long

Because the vast majority of these patients were old, and the elderly often have lasting symptoms from any serious infection. Any viral infection can cause long term issues if you have a compromised immune system or are elderly. I've read the UK case study which had 60+ subjects and many of those under 60 were listed as "high risk" professions (they didn't list the professions due to privacy, but I'm guessing it's likely front like health care with high exposure amounts). The biggest source of transmission is still the home. You're around someone who is breathing out large viral load. This might be why we're seeing the huge uptakes in Texas, Florida and Southern California: people indoors all the time because air conditioning. There are other diseases with long term effects in only some people: Ticks and Limes disease is a good example. I think we might be seeing something similar to Limes here.