S.F. experiencing big increase in intestinal sickness

San Francisco has seen a significant increase this month in cases of the intestinal illness shigellosis, particularly among the homeless population, the city health department said Friday.

Sixty-five cases of shigellosis were confirmed in the city from Dec. 1 to 23, according to the health department. Typically, San Francisco receives reports of about five to 10 cases per month.

Shigella is a bacterium that causes diarrhea, with symptoms typically lasting a few days. Though most people can recover on their own without seeking medical care, the illness is highly contagious and can cause dehydration, bacteria in the blood and seizures among young children, the elderly and HIVpositive people.

The bacterium spreads through contact with contaminated surfaces, food handling and im- proper sanitation. The spread can be prevented by washing hands, especially before preparing or serving food, before eating and after using the restroom.

About 40 percent of the cases reported in December were among people who are homeless, the city said.

“We are particularly concerned about our homeless residents, who are more vulnerable to disease than people with stable housing,” said Dr. Tomás Aragón, San Francisco’s health officer.

“We are particularly concerned about our homeless residents, who are more vulnerable.”

Tomás Aragón, health officer

“People who are in crowded conditions and without access to running water and sanitation facilities are more susceptible to contracting and spreading shigella. We are working closely with homeless service providers to ensure that this community is reached.”

The health agency’s homeless outreach team is passing out antiseptic towelettes and giving instruction on sanitation. Officials are also working with the city’s shelters and soup kitchens to ensure proper cleanliness.