Vaxchora approved for prevention of Cholera
Traveling this summer, see if your plans should include Vaxchora
The U.S. Food and Drug Administration (FDA) approved Vaxchora, a vaccine for the prevention of cholera caused by serogroup O1 in adults 18 through 64 years of age traveling to cholera-affected areas.
Vaxchora is the only FDA-approved vaccine for the prevention of cholera.
Cholera is a disease caused by Vibrio cholerae bacteria, is acquired by ingesting contaminated water or food and causes a watery diarrhea that can range from mild to extremely severe.
Often the cholera infection is mild, however, severe cholera is characterized by profuse diarrhea and vomiting, leading to dehydration. It is potentially life threatening if treatment with antibiotics and fluid replacement is not initiated promptly.
According to the World Health Organization (WHO), serogroup O1 is the predominant cause of cholera globally.
“The approval of Vaxchora represents a significant addition to the cholera-prevention measures currently recommended by the Centers for Disease Control and Prevention for travelers to cholera-affected regions,” said Peter Marks, M.D., Ph.D., director of the FDA’s Center for Biologics Evaluation and Research.
While cholera is rare in the U.S., travelers to parts of the world with inadequate water and sewage treatment and poor sanitation are at risk for infection. Travelers to cholera-affected areas have relied on preventive strategies recommended by the CDC to protect themselves against cholera, including safe food and water practices and frequent hand washing.Vaxchora is a live, weakened vaccine that is taken as a single, oral liquid dose of approximately three fluid ounces at least 10 days before travel to a cholera-affected area.
Vaxchora efficacy was 90 percent among those challenged 10 days after vaccination and 80 percent among those challenged three months after vaccination. The study included provisions for administration of antibiotics and fluid replacement in symptomatic participants. To prevent transmission of cholera into the community, the study included provisions for administration of antibiotics to participants not developing symptoms.
The safety of Vaxchora was evaluated in adults 18 through 64 years of age in four randomized, placebo-controlled, multicenter clinical trials; 3,235 study participants received Vaxchora and 562 received a placebo. The most common adverse reactions reported by Vaxchora recipients were tiredness, headache, abdominal pain, nausea/vomiting, lack of appetite and diarrhea.
In addition, the FDA awarded the manufacturer of Vaxchora a tropical disease priority review voucher, under a provision included in the Food and Drug Administration Amendments Act of 2007. This provision aims to encourage the development of new drugs and biological products for the prevention and treatment of certain tropical diseases
Vaxchora is manufactured by PaxVax Bermuda Ltd., located in Hamilton, Bermuda.