Investigation Update Silver Shadow
Investigation Update - August 5, 2004
- Silverseas Cruise Line reported an increased number of cases of gastrointestinal (GI) illness on the
ship, Silver Shadow, for the voyage completed on August 6, 2004, in San Francisco, CA (sailing dates: July
26-August 6).
- On August 4, Silverseas Cruise Line contacted CDC’s Vessel Sanitation Program (VSP) staff to report
that an unusual number of Silver Shadow passengers were experiencing GI illness. On August 4 at 3:23 p.m.,
the ship’s medical staff reported that 13 of 371 (3.50%) passengers and 5 of 289 (1.73%) crew members were
ill. The predominant symptoms were vomiting and diarrhea.
- The vessel underwent extensive cleaning and disinfection. Silverseas Cruise
Line provided VSP with special daily reports regarding any incidence of GI
illness; no significant levels of GI illnesses were reported. Stool specimens
were collected and the causative agent is unknown.