There have been outbreaks on cruise ships, with norovirus being reported in some cases, sickening dozens to over 100 people. The outbreaks have raised concerns about health risks on cruise ships, with some reports suggesting a possible link to the layoff of full-time cruise ship inspectors by the CDC. The Vessel Sanitation Program, which is involved in overseeing cruise ship health and safety, is mentioned in connection with the outbreaks, but the exact circumstances and causes are not entirely clear.