With infants at highest risk, a highly contagious gastrointestinal virus is seeing a late surge

May 1, 2026 - 05:45

A highly contagious gastrointestinal virus known as rotavirus is surging across the country and filling local hospital beds, with doctors noting an unusual late-season spike. While the illness typically peaks in February or March, cases have remained elevated well into spring, catching many families off guard.

Rotavirus is the leading cause of severe diarrhea and vomiting in infants and young children. The virus spreads easily through contaminated hands, surfaces, and food. Symptoms include watery diarrhea, fever, and abdominal pain, which can quickly lead to dangerous dehydration in babies and toddlers.

"We are seeing a higher number of cases than expected for this time of year," said one pediatric infectious disease specialist. "Parents need to watch for signs of dehydration, such as dry mouth, no tears when crying, and fewer wet diapers."

The late surge may be linked to lower immunity in the community after two years of masking and social distancing, which limited exposure to common viruses. While a vaccine exists and is recommended for infants, not all children are fully immunized.

Treatment focuses on preventing dehydration with oral rehydration solutions. Doctors advise against giving plain water or sugary drinks to young children with rotavirus. In severe cases, hospitalization for IV fluids may be needed.

Health officials urge handwashing with soap and water, as alcohol-based hand sanitizers are less effective against rotavirus. Parents should keep sick children home and disinfect toys and surfaces thoroughly.