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Parvovirus Is Spreading Across Northern California — but Many Still Think of Parvo as a Dog Disease
- Parvovirus B19 activity is rising in the United States, with increases seen since 2024.
- Human parvovirus B19 is a human virus, not the canine parvovirus linked to dogs.
- Most infections are mild, but the virus can pose risks to pregnant people and immunocompromised individuals.
- There is no vaccine for human parvovirus B19, so prevention relies on standard health practices.
- Outbreaks tend to cycle every three to four years, often peaking in late winter to early summer.
- COVID-19 precautions likely contributed to immunity gaps enabling parvovirus B19 spread later.
- The virus spreads mainly through respiratory droplets and close contact.
- Most healthy people recover without complications, but risks exist for certain groups.
- No vaccine means continued emphasis on hygiene to reduce spread.
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