Health Care Provider Information on Norovirus

on this page:
Required Disease Reporting
Clinical Features
Laboratory Diagnosis
Treatment
Outbreak Prevention and Control

Required Disease Reporting

Clinical Features

Laboratory Diagnosis

  • In the last 10 years, diagnosis of norovirus illness in outbreaks has improved with the increasing use of reverse transcriptase polymerase chain reaction (RT-PCR). Currently, 27 state public health laboratories (including the MDH Public Halth Laboratory) have the capability to test for noroviruses by RT-PCR. RT-PCR can be used to test stool and emesis samples. Identification of the virus can be best made from stool specimens taken within 48 to 72 hours after onset of symptoms, although good results can be obtained by using RT-PCR on samples taken as long as 5 days after symptom onset. Virus can sometimes be found in stool samples taken as late as 2 weeks after recovery.
  • Testing at MDH is reserved for outbreak investigations; routine clinical testing is not available at MDH.

Treatment

  • No specific therapy exists for viral gastroenteritis. Symptomatic therapy consists of replacing fluid losses and correcting electrolyte disturbances through oral and intravenous fluid administration.

Outbreak Prevention and Control


Do you suspect that you have a foodborne illness? Visit reporting suspected foodborne illnesses.

 

Updated Tuesday, November 16, 2010 at 03:03PM