vector-borne disease

It’s been nearly two decades since the last publication of a nationwide survey on the distribution of blacklegged ticks — the primary transmitters of Lyme disease. That survey, released in 1998, reported the tick in 30 percent of U.S. counties. Today, a new study using similar surveillance methods has found the tick in more than 45 percent of counties. “These kinds of changes tend to be gradual,” study co-author Rebecca Eisen, a research biologist in the Centers for Disease Control and Prevention’s Division of Vector-Borne Diseases, told me. “But when you see the cumulative change over 20…
The Centers for Disease Control and Prevention considers it one of five neglected parasitic infections in need of targeted public health action. And while its transmission is still considered rare in the U.S., it seems residents of Texas may be at greater risk than scientists previously thought. The disease is American Trypanosomiasis, more commonly known as Chagas disease. Chagas is a vector-borne disease in which the parasite is transmitted to animals and people by blood-sucking insects known as “assassin bugs” or “kissing bugs” (here’s what the bugs look like). However, the parasite isn’t…
It looks like a simple piece of paper and it’s nearly as cheap, ideally costing just pennies. But despite its small size, it’s poised to make an enormous impact and potentially save thousands of lives. It’s a new test to spot counterfeit versions of the drug artesunate, which is one of the most important drugs used to treat malaria, a mosquito-borne disease that affects hundreds of millions of people every year. Based on the science of microfluidics, researchers at Oregon State University developed an easy-to-use and inexpensive testing kit that patients and health care providers can use to…
Most people infected with mosquito-borne West Nile virus don’t experience any symptoms at all. However, the tiny percentage of cases that do end up in the hospital total hundreds of millions of dollars in medical costs and lost productivity. Published earlier this week in the American Journal of Tropical Medicine and Hygiene, researchers estimated that the cumulative cost of reported hospitalized cases of West Nile virus between 1999 and 2012 totaled $778 million. The study is the first to examine the economic burden of West Nile on infected patients who were hospitalized with conditions such…
Last year, reported cases of West Nile virus in the United States hit their highest levels in nearly a decade. It's a good reminder to keep protecting yourself from getting bitten, but it also begs the question: Is this just a sign of a much bigger threat? The answer is just as wily as the pesky mosquito. According to recent data published June 28 in CDC's Morbidity and Mortality Weekly Report, the federal public health agency received reports of 5,780 nationally notifiable arboviral disease cases in 2012. (Arboviral diseases are those transmitted by arthropods, such as ticks and mosquitoes…