Just an update on my 12-year-old son Mark's experience in Wuhan. (Mark has asthma but hasn't needed flovent for 1.5 years and has been doing really well for the last 18 months.) His typical peak flow measurement before going to Wuhan was about 360-370. Except for 3 or 4 days when he went down to 340, his peak flow was a pretty constant 360-370 while he was in Wuhan. He returned from his 2 month stay in Wuhan on 7/15 in Chicago. His first peak flow was 400. He has never matched that again and has stayed in the 360-370 range. Basic conclusion is that the pollution in Wuhan didn't have a noticeable effect on his asthma.