Covid Live Updates: Cases, Limits, etc.

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Public health measures to stop the Covid-19 epidemic have unintended consequences for Latin America and Southeast Asia as a whole in 2020. According to a study published this month at The Lancet, dengue virus infection was prevented in hundreds of thousands of people. Clue to new strategies to combat dangerous tropical diseases that infect more and more people each year.

Studies have shown that since April 2020, mosquitoes have been significantly reduced in many areas infected with dengue fever. Studies show that in the first year of the pandemic, restricted mobility has reduced the number of cases of dengue fever worldwide by 720,000.

Dr. Oliver Brady, an epidemiologist at the London School of Economics and Tropical Medicine and lead author of the study, said: ..

In 2019, more than 5 million people worldwide were infected with dengue fever. Dengue fever is also known as “breakbone fever” because of the severe joint and muscle pain it causes.

Dr. Brady said he and other infectious disease researchers were afraid of the disaster as resources were diverted to Covid-19 early in the pandemic and other disease management measures such as mosquito spraying were interrupted. Significant reduction in dengue cases It was a pleasant surprise and I wanted to know what was the cause. It eliminated other potential factors, such as changes in the environment and reduced reports of dengue fever by public health agencies, causing serious disruption to people’s movements. As a plausible explanation, he said.

School closures, in particular, appear to have played an important role in reducing cases of dengue. Aedes aegypti, the main dengue vector, is a daytime feeding. Most dengue programs focus on people’s homes, spraying to kill mosquitoes, and “but if the home is a really dangerous place and mosquitoes are biting the home, the order at home is a risk. It is expected to increase — Still, in many countries it is not seen. “

Researchers have not proposed to continue the stay-at-home order, but unusual circumstances have provided unexpected insights. Dr. Brady said their findings suggest that bites are occurring at school and at work, so mosquito control needs to be concentrated in public places. Dengue fever may have declined during the stay-at-home order. Because when people were infected, they weren’t going to places where new mosquitoes could bite them and infect others with the virus.

Studies suggest that dengue findings may be associated with other closely related mosquito-borne viruses such as Zika and chikungunya. , May bring bad news. If the vector control program is interrupted, infection rates may return to pre-Covid levels or worsen, but immune levels may have declined due to fewer exposed people.

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