How to judge whether you have dengue fever in summer and autumn, and be alert to the symptoms and prevent them early.

Many countries in the world are facing the challenge of dengue fever epidemic, especially in Brazil. As of May 4, more than 4.27 million suspected and confirmed cases have been recorded this year, accompanied by 2,197 deaths. In response, Brazil took action to build a Wolbach Bacillus biological factory in belo horizonte on April 29th, hoping to curb the spread of dengue fever by releasing mosquitoes carrying the bacteria.

Paraguay has also been seriously affected. Since September last year, the number of confirmed cases of dengue fever has climbed to 42,775, and the death toll has reached 98. Argentina and Uruguay also reported a significant increase in cases, with 379,341 cases and 804 cases respectively, with 280 people and 3 deaths respectively. The situation in Indonesia is also not optimistic, with more than 62,000 cases of dengue fever and 475 deaths, an increase of about three times compared with the same period last year, and China citizens have been confirmed to be infected.

The epidemic season of dengue fever usually begins in May, which mainly affects the southern provinces of China, such as Guangdong, Guangxi, Hainan, Fujian and Zhejiang. It is characterized by strong import, suddenness, rapid spread, high incidence and general susceptibility. This is an acute insect-borne infectious disease spread by the bite of Aedes mosquitoes, which is mainly prevalent in tropical and subtropical regions, especially in Southeast Asia, the Western Pacific and America. After a patient or a recessive infected person is bitten by a mosquito, it takes 8 to 10 days for the mosquito to reproduce the virus before it can be transmitted to humans again.

The key to prevent dengue fever lies in mosquito control, including wearing light-colored long-sleeved clothes and using mosquito repellent to avoid stagnant water areas when outdoors; At home, it is necessary to remove stagnant water, keep the environment ventilated and dry, use screen doors, screens and mosquito nets, and use mosquito-killing products if necessary. At present, although there is no specific therapeutic drug, timely medical intervention can effectively control symptoms and prevent complications, and most patients can fully recover. Therefore, if there are symptoms such as high fever, three red signs (flushing on face, neck and chest), three pains (headache, joint pain and muscle pain) and rash, you should seek medical attention in time to avoid delaying treatment.