Which test is commonly used to detect parvovirus in feces?

• A. Fecal antigen ELISA
• B. PCR
• C. Serology
• D. Bacterial culture

Answer: (A)

Detecting parvovirus in feces relies on identifying the virus’s presence directly in the stool. Fecal antigen ELISA does exactly that by measuring viral capsid antigen in the sample, giving rapid, on-site results that guide immediate management. This approach is favored because it is quick, inexpensive, and detects active shedding, which helps confirm an active infection.

PCR can also detect viral DNA and is very sensitive, but it is more resource-intensive and not as routinely used in everyday practice. Serology looks for antibodies in blood, which doesn’t distinguish current infection from past exposure or vaccination, and stool culture won’t detect viruses at all. So the fecal antigen ELISA is the most practical standard for quick detection of parvovirus in feces.