Norovirus Outbreaks Surge to Highest Levels Since 2012

The United States is seeing a dramatic increase in norovirus cases, with reported outbreaks reaching their highest numbers since 2012. According to the U.S. Centers for Disease Control and Prevention (CDC), there were 91 outbreaks during the week of December 5, surpassing prior records for this time of year. Newsweek has contacted the CDC for additional comment on these developments. Why It Matters Norovirus, a highly contagious virus, is the leading cause of foodborne illness in the U.S., affecting millions annually. The current surge comes during the winter season when the virus typically peaks, highlighting the potential for widespread disruption in communal settings like schools, nursing homes, and cruise ships. What To Know The CDC’s NoroSTAT program recorded 495 norovirus outbreaks from August to December 2024, a sharp increase from 363 during the same period last year. December saw record-breaking numbers across multiple metrics. The first week of December alone reported 91 outbreaks, far surpassing the previous high of 65 for that timeframe. Experts attribute the surge to expanded participation in monitoring programs and a rise in social interactions following years of pandemic restrictions. Public health officials stress that norovirus spreads easily, calling for greater awareness and prevention efforts. Only 14 states currently participate in the NoroSTAT reporting program, meaning the actual number of outbreaks nationwide may be even higher. This is a graph showing the number of suspected or confirmed norovirus outbreaks reported by NoroSTAT-participating states per week during August 2024–December 2024. This is a graph showing the number of suspected or confirmed norovirus outbreaks reported by NoroSTAT-participating states per week during August 2024–December 2024. CDC What Are the Symptoms of Norovirus? Norovirus typically causes sudden vomiting, diarrhea, stomach pain, fever, and body aches. Symptoms often appear 12 to 48 hours after exposure and can come on suddenly, leaving individuals feeling severely ill. Infections can lead to dehydration, particularly in vulnerable groups such as young children and older adults. Dehydration symptoms include dry mouth, reduced urination, and dizziness. Children may exhibit increased fussiness and tearless crying. Medical attention is advised for severe cases. How Long Does Norovirus Last? While symptoms can be intense, most people recover within one to three days. The highly contagious virus can continue spreading through contaminated surfaces, food, or water. Those infected should stay hydrated and avoid preparing food for others to limit transmission. Health experts recommend rigorous hygiene practices like washing your hands during this time to minimize the spread. What People Are Saying Dr. Georges Benjamin, executive director of the American Public Health Association (APHA), told Fortune earlier this month: “It doesn’t take a lot to get people pretty sick. That’s the main reason it’s so infectious.” CDC’s public health statement: “The rise in cases emphasizes the need for preventive measures. Early recognition of symptoms and isolating cases can limit further spread.” What Happens Next As the 2024–25 season progresses, public health officials are monitoring trends and advocating for preventive practices, including proper handwashing and disinfection of surfaces. Research into a potential vaccine is underway, but for now, vigilance remains the key to reducing the impact of the virus in communities. Health agencies will release further updates as data becomes available. Headquarters of the U.S. Centers for Disease Control and Prevention (CDC) in Atlanta is seen. The United States is seeing a dramatic increase in norovirus cases, with reported outbreaks reaching their highest numbers since 2012. Headquarters of the U.S. Centers for Disease Control and Prevention (CDC) in Atlanta is seen. The United States is seeing a dramatic increase in norovirus cases, with reported outbreaks reaching their highest numbers since 2012. CDC