 Then you're sort of seeing a different environment for respiratory viruses, which is a little bit more conducive to spread. He says flu and RSV basically go away in the summer, but COVID never quite reached that stage. You're also hearing about some variants that are circulating now that are a little bit better at evading the pre-existing population immunity. That, combined with the heat, is causing people to get sick. Some people are staying cool by turning on fans or standing in front of air blowers.