Time: 2024-08-14
CNN reported that the US Centers for Disease Control and Prevention issued a warning about the rising activity of the seasonal respiratory virus known as parvovirus B19 , also referred to as fifth disease . This common virus spreads through respiratory droplets , with antibodies from infection believed to provide protection against reinfection . In fact , over half of US adults have detectable levels of these antibodies by the age of 20 , increasing to over 70 % by the age of 40 . Individuals in close contact with children , such as those in schools and daycares , are at a higher risk of infection.
The CDC highlighted that efforts to prevent the spread of Covid-19 during the pandemic led to a significant decrease in parvovirus B19 infections and immunity . However , recent reports have shown higher test positivity rates and clusters of complications , particularly among individuals at a high risk of severe illness . The percentage of people with antibodies showing recent infection rose from below 3 % to 10 % in June , with children aged 5 to 9 experiencing the highest increase . Pregnant individuals have also seen higher - than - expected case counts , including complications like severe fetal anemia or miscarriage.
Individuals infected with parvovirus B19 may not exhibit any symptoms , but those who do typically experience two phases of illness . The first phase , occurring about a week after infection , includes symptoms such as fever , muscle aches , and malaise that last around five days . This phase is when individuals are most contagious . The second phase , which starts approximately a week later , often results in children developing a characteristic facial rash followed by a body rash or joint pain , while adults may experience a trunk rash and joint pain.
While there is no vaccine or specific treatment for parvovirus B19 , the CDC advises following general precautions to prevent the spread of respiratory illnesses . These precautions include frequent handwashing , keeping surfaces clean , and covering the mouth and nose when coughing or sneezing . If symptoms develop , individuals should isolate themselves until they improve and remain fever - free for at least 24 hours without medication . Pregnant individuals , those with weakened immune systems , or chronic hemolytic disorders are encouraged to wear masks around others and seek medical attention promptly if symptoms arise.
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