Hepatitis A virus genotyping

Health Science

Enteric, Environmental and Food Virology Laboratory

Kenepuru Science Centre, Porirua

Hepatitis A virus genotyping

Hepatitis A virus

yes

no

Serum/ EDTA plasma obtained from all acute cases, diagnosed by positive IgM serology (in the absence of HAV vaccination in the preceding 12 weeks) or by detection of HAV by PCR/NAT. Minimum volume 0.25 mL. Where possible, a faecal specimen should also be collected. Minimum 0.25 g or 0.25 mL.

Store serum or EDTA plasma at 5 ± 3°C for less than 24 hours, otherwise freeze at -20°C or -70°C. Store faecal specimen at 5 ± 3°C for up to 5 days, otherwise freeze at -20°C.

Standard biohazard packaging. Refrigerated specimen should be shipped on cold packs where possible. Ship same day or overnight. Include EpiSurv case and/or outbreak number.

Specimens received without a form, with insufficient material to analyse, or in poorly labelled or leaking containers will not be tested. Insufficient sample (< 0.25 g or < 0.25 mL faecal material, or < 0.25 mL serum/plasma) may be rejected. Haemolysed specimens are not accepted.

Report will state the genotype identified.

Form