in animal feed and is able to survive environmentally for up to one month. Eradication of FMD in endemic areas has been difficult, despite the availability of a vaccine. Equine rhinitis A virus (ERAV) was first isolated from horses in the 1960s and 1970s showing acute febrile respiratory disease signs, including fever, cough, clear nasal discharge and lethargy. Given its similarity to the common cold in humans (caused by another picornavirus, rhinovirus), ERAV was initially named "equine rhinovirus 1". Modern molecular biology techniques such as nucleotide sequencing demonstrated that ERAV was in fact more closely related to FMDV, and was reclassified to the genus Aphthovirus. See also Animal virology References External links Aphthovirus summary from the Iziko Museums of Cape Town, South Africa. Foot-and-Mouth Disease summary from the US Department of Agriculture. Aphthovirus Animal viruses Viralzone: Aphtovirus ICTV Virus genera