Some cases of measles can be mild, but up to half of infected children may need medical attention, said Dr. David Sugerman, who leads the measles team at the Centers for Disease Control and Prevention. Children with measles may develop diarrhea and dehydration, pneumonia that leads to long-term respiratory difficulties, and brain inflammation that results in neurological problems, Dr. Sugerman said. Deaths from measles rose worldwide by 43 percent between 2021 and 2022, according to a report in November from the W.H.O. Measles is among the most contagious infections, and the virus can linger in the air for up to two hours. In the United States, the measles vaccine is given twice, at 12 to 15 months old, and at 4 to 6 years of age.

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Persons: David Sugerman, Sugerman Organizations: Centers for Disease Control, Prevention Locations: United States