The U.S. surpassed 1,000 measles cases Friday, even as Texas posted one of its lowest counts of newly confirmed cases since its large outbreak…

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.

New Hampshire health authorities are reporting the death of a person who tested positive for the mosquito-borne eastern equine encephalitis virus. The Hampstead resident's infection was the first in the state in a decade. The New Hampshire Department of Health and Human Services says the person had severe central nervous system symptoms. There is no vaccine or antiviral treatment available. The U.S. Centers for Disease Control and Prevention says about a third of people who develop encephalitis from the virus die, and survivors can suffer lifelong mental and physical disabilities. There are typically about 11 human cases of eastern equine encephalitis in the U.S. per year.