Increase in Human Parvovirus B19 Activity in the United States

What is Parvovirus B19?

Parvovirus B19 is a seasonal respiratory virus that is transmitted through respiratory droplets by people with symptomatic or asymptomatic infections. It is most commonly seen in the spring months.

Recent Increase in Parvovirus B19 Activity

The US Centers for Disease Control and Prevention (CDC) has received reports indicating increased parvovirus B19 activity in the United States. These reports include data from commercial laboratories and state health departments.

The CDC is issuing a Health Alert Network (HAN) Health Advisory to notify healthcare providers about this increase in activity.

Symptoms of Parvovirus B19

Most people infected with parvovirus B19 will not have any symptoms.

However, some people may develop mild symptoms, such as:

• Fever
• Rash
• Headache
• Fatigue
• Muscle aches
• Joint pain

Complications of Parvovirus B19

In some cases, parvovirus B19 can cause more serious complications, such as:

• Anemia
• Thrombocytopenia (low platelet count)
• Myocarditis (inflammation of the heart muscle)
• Arthralgia (joint pain)
• Encephalitis (inflammation of the brain)

Treatment for Parvovirus B19

There is no specific treatment for parvovirus B19. Treatment is supportive and may include:

• Rest
• Fluids
• Pain relievers
• Antiviral medications (in some cases)

Prevention of Parvovirus B19

There is no vaccine to prevent parvovirus B19.

The best way to prevent infection is to avoid contact with people who are sick with respiratory illnesses.

If you are infected with parvovirus B19, you should stay home from work or school to avoid spreading the virus to others.

Additional Information

For more information about parvovirus B19, please visit the CDC website:

https://www.cdc.gov/parvovirusb19/