About Widely Prevalent Viruses of the United States

The database is periodically updated by regional coordinators around the country. In addition to providing information for plant pathologists and diagnosticians, the list will be used by APHIS-PPQ and State Plant Regulatory Officials to develop a list of viral plant pathogens that are common in each state to help expedite the permitting process for obtaining research isolates. The APHIS-PPQ list will be available on the APHIS website.

A "Widely Prevalent" organism is an organism that:

  • is widely distributed in any given five year period in the State where the host plant(s) is grown. It does not have to be encountered every year at every location
  • would raise no new regulatory concerns at the State or Federal level if it was identified

Regional Coordinators

Other Widely Prevalent Sites