12 SARS Patients Report Relapses.

Hong Kong fficials said here tonight that a dozen patients who had seemed to recover from SARS became ill again after leaving the hospital.NY Times One of the implications is that patients may still be harboring the virus and therefore contagious after they seem to have recorvered and are returned to the community; there is no way of knowing without a diagnostic test for the viral cause. It is widely considered that public health measures such as screening of travellers and quarantine precautions are bringing the outbreak to a halt, but we might be seeing the calm before the storm.