According to the latest report of the Ministry of health of Brazil, as of mid May, the number of dengue cases in the country had increased by 165.7% year-on-year. Brazil reported 655000 cases of dengue fever in the first four months, up from 544000 last year Among them, the Federal District of Brasilia, the capital, and the five states of Goias, pioi, Rio Grande do Sul, Santa Catalina and Tocantins have seen the most serious dengue epidemic in the past decade.
Brazil's "G1" website 23 reported that a variety of infectious diseases caused by mosquito borne viruses have broken out in the country recently, including dengue fever, Zika virus and Chikungunya fever. As of the 23rd local time, 323 people had died of dengue fever. The state with the largest death toll was Sao Paulo, with 118 deaths. Dengue fever mostly occurs in tropical and subtropical areas. Its symptoms include fever, headache, nausea and joint pain. In severe cases, there will be bleeding, shock and even death.
"Sao Paulo page" said that the COVID-19 is one of the reasons why dengue fever is difficult to control. As a large number of public health personnel were sent to deal with the COVID-19, the action to control mosquitoes decreased, resulting in a large number of mosquitoes. Chebarber, an expert of the Brazilian Institute of infectious diseases, said that the supply chain was interrupted due to the new coronavirus pandemic and regional conflicts, making it more difficult to manufacture and transport dengue kits. Brazil's Ministry of Health said the new kit was not expected to be "replenished" until June.
Climate change is also one of the factors leading to the surge of dengue fever in Brazil. Since the summer of 2021, the rainfall in many places in Brazil has increased greatly, which is conducive to mosquito breeding and virus transmission. Although the cold weather in winter can prevent mosquito breeding, with the increase of temperature in some areas in recent years, mosquitoes can breed all year round. Sao Paulo page said that in order to deal with the dengue epidemic, health departments in many parts of Brazil have taken response measures, including increasing training for staff of the health care system, taking larger-scale anti mosquito actions, strengthening public education and so on.