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Chapter: Microbiology and Immunology: Virology, Virus: Parvoviruses

Epidemiology - Parvovirus B19

B19 virus is distributed worldwide. The exact data on seroposi-tivity in population world over is not known.

Epidemiology

 Geographical distribution

B19 virus is distributed worldwide. The exact data on seroposi-tivity in population world over is not known. Approximately, 90% of adults older than 60 years are seropositive in the United States. Similar data from other parts of the world are lacking.

 Reservoir, source, and transmission of infection

B19 virus infection is strictly a human disease. Humans are the only reservoir. Viruses are excreted in respiratory samples, which are the primary source of infection. The infected patient is conta-gious from 24 to 48 hours before developing prodromal syndrome till the appearance of rash. The infection is transmitted by:

·           vertical transmission during birth;

·           respiratory route through respiratory secretions; and

·           percutaneous exposure to blood and transfusion of blood and blood products (pooled RBCs, platelets, intravenous immunoglobulins, etc.).

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Microbiology and Immunology: Virology, Virus: Parvoviruses : Epidemiology - Parvovirus B19 |


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