Table 2. Serum specimens for antibody testing.
Patient classification | Acute phase serum | Recovery phase serum |
---|---|---|
Confirmed or suspect cases | Blood specimens on the day of hospitalization within 7 days of onset | Blood collected 14 days after the acute phase specimen; the second recovery phase specimen is collected after a 7-day interval |
Confirmed or suspect cases when sera is not collected within 7 days of onset | None | Blood collected 14 days after the appearance of symptoms |
Close Contact cases | Blood collected within 14 days of the final day of exposure | Blood collected 14 days after the acute phase specimen; the second recovery phase specimen is collected after a 7-day interval |
Close Contact cases when sera is not collected within 14 days of onset | None | Blood collected 14 days after the final day of exposure |