An alarming outbreak of E. coli infections has struck Lake Anna, a popular recreational spot in Virginia, prompting an extensive investigation and water quality testing. At least 20 people contracted the bacterium after swimming in the lake, with nine individuals requiring hospitalization (CBS News; USA TODAY).

The Virginia Department of Health reported the infections, affecting mainly children, occurred between May 27 and June 4. Following this, the department has been investigating all potential causes, including possible lake water and food exposures (CBS News; USA TODAY). Out of the 20 confirmed cases, there are an additional 10 cases under investigation, though E. coli has not yet been confirmed in those instances (CBS News).

Environmental officials have initiated water tests in Lake Anna to evaluate the bacteria levels and assess ongoing public health risks (CBS News; USA TODAY). Lake Anna was formed in the 1970s as a reservoir for cooling an adjacent nuclear power plant, featuring a distinct 'cold' side and 'warm' side (CBS News).

Health officials have urged swimmers to exercise caution, offering safety measures such as showering before and after swimming, washing hands before eating, and avoiding swimming if experiencing diarrhea (CBS News; USA TODAY). Additional advice includes warnings against swallowing untreated water and swimming with open cuts or wounds to reduce the risk of infection (CBS News).

E. coli infections typically present symptoms such as stomach cramps, diarrhea, vomiting, and fever. However, in severe cases, the bacteria can cause kidney damage leading to hemolytic uremic syndrome (HUS), a life-threatening condition (CBS News). At least one case resulting from this outbreak required blood transfusions and dialysis (USA TODAY).

The Virginia Department of Health has assured the public of ongoing clinical evaluation and treatment for affected individuals as efforts to contain and resolve the outbreak continue (USA TODAY). Lake Anna, a 17-mile-long lake spanning about 13,000 acres with approximately 200 miles of shoreline, is a popular destination for swimming, boating, and fishing (CBS News; USA TODAY).

As tests on the lake water continue, the results will be crucial in determining necessary safety measures to prevent future outbreaks. This incident serves as a sobering reminder of the potential health risks posed by natural bodies of water and emphasizes the importance of careful precaution to safeguard public health.