COVID-19 activity is rising in much of the country. Data shows overall respiratory virus spread is very low in the U.S. But COVID-19 is rising in most states, with more people of all ages going to emergency rooms because of it. The stratus variant is most common. It can cause a "razor blade" sore throat and is considered a "variant under monitoring" by the World Health Organization, but it is only marginally better at evading people's immune systems. Flu and RSV activity remain very low. Doctors say hot summer weather can drive people indoors where respiratory viruses like to spread.

COVID-19 activity is rising in much of the country. Data released Friday by federal health officials shows overall respiratory virus spread is low. But COVID-19 is rising in many states in the mid-Atlantic, the South, the southeast and on the West Coast. More people of all ages are going to emergency rooms because of COVID-19. Flu and RSV activity remain very low. Doctors say hot summer weather can drive people indoors where respiratory viruses like to spread.

U.S. Health Secretary Robert F. Kennedy Jr.'s new vaccine advisory panel plans to revisit long-settled questions about childhood vaccines. On Wednesday, the new committee announced it would be looking into the childhood vaccine schedule and into specific shots like the hepatitis B and MMR-chickenpox combination. Pediatricians and scientists are expressing alarm. The American Academy of Pediatrics criticized the committee, calling its process "no longer credible." The panel also discussed COVID-19 vaccines and shots that protect infants from RSV.

The U.S. winter virus season is in full force, and by one measure is the most intense in about 15 years. One indicator of flu activity is the percentage of doctor's office visits driven by flu-like symptoms. According to data posted Friday, that level last week was higher than the peak of any winter flu season since 2009-2010. So far this season, the CDC estimates, there have been 13,000 flu deaths — including at least 57 children. The flu has forced schools to shut down in some states. One Texas district closed for three days because 650 students and 60 staff were out one day last week.