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In many regions, summer is a time of both enjoyment and concern. The outdoors holds the risk of encountering a tick, which can transmit bacteria responsible for Lyme disease. This illness is marked by its signature bull's-eye rash and lingering symptoms. If new findings are accurate, more individuals may have been exposed to the disease than previously thought.
A meta-analysis published in the journal BMJ Global Health reviewed data from 89 studies involving 158,287 participants. Blood tests showed that approximately 14.5 percent had been infected with Borrelia burgdorferi and related bacteria, which cause symptoms like muscle pain, nausea, and fatigue. These bacteria spread from the tick’s gut to its salivary glands while feeding parasitically on a host.
The percentage of individuals with antibodies indicating current or past infection was higher in Central Europe, where 20 percent tested positive. In the Caribbean, the rate was only 2 percent, and in the United States, it was about 9 percent.
The overall averages were influenced by regions where Lyme disease is common, increasing the likelihood of contracting the illness. It's also worth mentioning that the study analyzed only 89 full-text articles out of a potential 4,196 relevant studies, which might limit the scope of the findings. However, Peter Krause, a senior research scientist at Yale not involved in the study, told NBC News that the results aligned with previous research.
Although Lyme disease is rarely fatal, it’s considered a stealthy illness that can persist for months or even years, especially if treatment is delayed. If you're spending time outdoors in areas where ticks are prevalent, it’s advisable to perform a self-check afterward, paying close attention to your skin and areas like your armpits for any signs of the insect or a characteristic bull's-eye rash. Early treatment with antibiotics significantly boosts the chances of a full recovery.
A Lyme vaccine was introduced in 1998 but was withdrawn from the market after reports of potential side effects surfaced without confirmation. Pfizer is among the pharmaceutical companies currently working on alternative vaccine options.
