Bay Area Virus Surge Sparks Health Concerns
In recent weeks, a variety of gastrointestinal and respiratory viruses have surged through the Bay Area, particularly impacting San Francisco. It’s been quite alarming, really.
According to data from WastewaterSCAN, a group that tracks viral activity in sewage systems, COVID-19 rates remain low. However, other viruses like rotavirus, norovirus, human metapneumovirus (HMPV), and influenza types A and B, as well as RSV, are still prevalent. Interestingly, the level of influenza A is moderate in the southeastern part of San Francisco.
The reasons behind this spike in viruses, especially in San Francisco, aren’t entirely clear. Health experts suggest that shifting vaccine recommendations may play a role in this situation.
Dr. Monica Gandhi, an infectious disease specialist at UC San Francisco, points out a notable increase in rotavirus cases this year compared to last. This virus can lead to severe diarrhea in young children, and there are a number of factors that could contribute to this rise—ranging from improved surveillance in wastewater to lower vaccination rates, though it’s hard to pinpoint exactly.
Gandhi expressed concern about the situation: “We’ve been worried about rotavirus,” noting that the Centers for Disease Control and Prevention no longer recommends routine vaccination against it. This seems crazy, especially since this vaccine used to be a standard part of childhood immunizations. The health department, now under vaccine skeptic Robert F. Kennedy Jr., has switched to a model where the rotavirus vaccine is only suggested through joint decision-making between doctors and patients or guardians.
Rotavirus spreads easily, similar to norovirus, often referred to as “the stomach flu.” It can be particularly brutal in crowded settings, like cruise ships. According to UCSF, around 50,000 children end up hospitalized annually due to rotavirus, suffering from a range of symptoms from fever and nausea to severe vomiting and diarrhea.
Alongside these lesser-known viruses, Northern California has also seen an uptick in flu-related hospitalizations and emergency visits as the new year unfolds.
The flu typically peaks in colder months, particularly from December to February, as per CDC guidelines. Even though flu cases have decreased since their peak in February, the virus levels remain high in wastewater. Experts from Kaiser Permanente suggest that a new flu strain, combined with lower vaccination rates, has led to higher hospitalization numbers post-holidays. Alarmingly, the CDC estimates 23,000 flu-related deaths and 380,000 hospitalizations nationally this season.
Dr. Gandhi adds that diminished public immunity may mean that viruses usually associated with winter are now extending into spring in the Bay Area.
To mitigate illness, experts recommend basic hygiene practices like thorough hand-washing to combat norovirus, along with staying current on vaccinations for both the seasonal flu and rotavirus. For more details on rotavirus, you can find additional resources online.
