The occurrence of waterborne transmission of infectious hepatitis has long been recognized,
but only in recent years have methods become available for its assay and propagation in the …

The “enteric” virus group comprises> 100 different viruses. These viruses typically infect the
cell lining of the alimentary canal and are discharged in very large numbers in the feces of …

The development of a solid‐phase microtiter enzyme immunoassay (EIA) for detection of
Norwalk virus antigen in stool samples is described. The EIA was compared with a …

Biotin-avidin immunoassays (BAIs) were developed to detect Norwalk virus antigen and to
measure Norwalk virus antibody. The BAI detected Norwalk virus infections by a fourfold titer …

An explosive outhreak of gastrointestinal illness occurred among students and employees at
a small college in Florida in November 1980. Common symptoms were diarrhea, nausea …

• An acute gastrointestinal tract illness affected 213 (52%) of 407 campers and 64 (53%) of
121 staff members attending a boys' camp in the Catoctin Mountains of Maryland during the …

In Philadelphia, 90% reduction points were also calculated. They ranged from 0.6 IM to 16
MM, with a mean of 7.9 WM (2 g/ml). An experiment to determine viral yield was also done to …

The isolation of viruses from treated drinking water has raised concerns that water treatment
methods may not always adequately insure the removal of viruses from water designated for …

Gastrointestinal infections are second only to respiratory infectious diseases in frequency
and morbidity. A conservative estimate places the annual worldwide mortality from …

COLLEAGUES-Two recent reports document that Norwalk or Norwalk-like viruses are
important causes of gastroenteritis [1, 2]. One of these reports also suggests that up to 4070 …