Hepatitis E Virus in Rats, Los Angeles, California, USA
Figure 2. Correlation between virus infection and serum levels of alanine aminotransferase (ALT) (shaded areas) in rats infected with hepatitis E virus, Los Angeles, California, USA. Six Sprague-Dawley rats (B430–5) were infected with a 104.5 50% rat infectious dose of rat HEV and tested 2×/wk for evidence of infection and hepatitis. PCR results were positive for only half a week in 5 of the 6 rats. Pre, preinfection.