Ben Lopman’s 18-month-old son went from an energetic toddler to totally listless in just 48 hours. Ruben suffered from severe dehydration caused by rotavirus, an infection that landed him in a hospital bed dependent on intravenous fluids. Lopman, an infectious disease epidemiologist now at Emory University, witnessed this collapse in 2008 while living in London, five years before the U.K. approved a vaccine for the virus.
That same volatility is returning to the United States. Federal data shows rotavirus levels have been climbing since mid-December, with infection rates currently higher than they were at this time last year. The virus behaves like a seasonal flu, but it targets the gastrointestinal system, which can quickly turn a common childhood illness into a life-threatening crisis for infants and those with weakened immune systems.
Wastewater data reveals high rotavirus concentrations in the West and Northeast
Public health officials aren’t relying on hospital admissions alone to track the spread. Data from WastewaterScan, a collaboration between Stanford University and Emory University, shows a surge in the West and Midwest. In California, the virus has hit “high concentrations” in San Jose, Santa Cruz, Redwood City, and Marin.
Moderate levels have appeared in San Francisco, Sacramento, Davis, and several other Bay Area cities. The surge isn’t confined to the coast; elevated levels have also emerged in Connecticut, New Jersey, and across the Northeast. Dr. Marlene Wolfe, WastewaterScan’s program director, noted that these wastewater spikes are a direct indicator of high infection levels within those specific communities.
Why the clinical progression of the virus often catches parents off guard
The illness often starts with deceptive simplicity. Dr. Stephanie Deleon, a pediatric hospitalist at Oklahoma Children’s OU Health, reports that patients typically present with a fever around 101 degrees and vomiting. These initial symptoms usually vanish within a day and a half, leading parents to believe the worst has passed.
The real danger arrives next. Once the vomiting stops, severe watery diarrhea begins, often exceeding 20 episodes per day. Because there’s no specific medication to kill the infection, doctors can only provide supportive care. Families must wait for the virus to run its course while fighting to keep the child hydrated.
Microscopic particles from infected fecal matter spread the virus through direct contact or contaminated surfaces. If a child can’t keep fluids down, the transition from a mild fever to critical dehydration happens rapidly.
Under the new federal guidance, parents now decide on vaccination with doctors
This surge arrives as the U.S. government shifts its approach to prevention. The administration now advises parents to decide with their doctors whether children should receive the rotavirus vaccine, moving away from previous CDC recommendations that all children be vaccinated. Health Secretary Robert F. Kennedy Jr. stated this change aligns U.S. policy with international standards and emphasizes informed consent.
The American Academy of Pediatrics pointed to Denmark as a model for this approach, noting that the country does not vaccinate against rotavirus. However, a court temporarily blocked this updated guidance last month, leaving a vacuum of uncertainty regarding future vaccination rates.
The current volatility mirrors the era before the first oral vaccine’s 2006 approval, when the virus routinely caused millions of cases annually. While the vaccine reduced annual deaths by roughly 20, the virus still kills between 20 and 40 children each year. Doctors worry that declining vaccination rates could trigger a more severe, sustained surge in the coming years.
How does rotavirus spread from person to person?
The virus is highly contagious and spreads via the fecal-oral route. This happens when a person touches a surface contaminated with microscopic particles from infected fecal matter and then touches their mouth.
Is there a specific medicine to treat the infection?
No. There is no medical treatment to cure the infection. Care is limited to supportive measures, primarily the administration of fluids to prevent severe dehydration until the virus runs its course.