8 years ago
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Dengue fever vaccine proves 100% effective in human trials
An experimental vaccine against the dengue virus has been found to protect 100 percent of recipients in a clinical trial carried out by the USA's National Institute of Allergy and Infectious Diseases (NIAID). In the NIAID trial 21 people were vaccinated with TV003, while 20 received a placebo. Six months later they returned to be infected with a mild version of dengue-2. All 21 people who'd received the vaccine were protected...
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This is a double-edged sword though. There are, afaik, 4 different variants of the virus, and you don't get cross-immunity from being exposed to one of them. Furthermore, he odds of developing hemorrhagic dengue go up every time you're infected. I had (classical) dengue fever back in college and since then I've been mildly terrified of catching it again.