DEPRESSION YELLOW FEVER

DEPRESSION

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RANKING ABOUT DEPRESSION IN THE WORLD

Source: WHO

YELLOW

FEVER

Symptoms:

Yellow fever is a serious infectious disease, caused by viruses and transmitted by vectors. Generally, whoever gets this virus does not have symptoms or they are very weak. The first manifestations of the disease are sudden: high fever, chills, tiredness, headache, muscle pain, nausea and vomiting for about three days. The most severe form of the disease is rare and usually appears after a brief period of well-being (up to two days), when hepatic and renal insufficiencies, jaundice (yellow eyes and skin), hemorrhagic manifestations and intense tiredness may occur. Most infected recover well and get permanent immunization against yellow fever.

Transmission

Yellow fever occurs in South and Central America, as well as in some African countries and is transmitted by mosquitoes in urban or wild areas. Its manifestation is identical in both cases of transmission, because the virus and the clinical evolution are the same - the difference is only in the transmitters. In the wild cycle, in forest areas, the yellow fever vector is mainly the Haemagogus mosquito. In the urban area, the transmission occurs through the mosquito Aedes aegypti (the same as dengue). The infection happens when a person who has never contracted yellow fever or taken the vaccine against it circulates in forest areas and is bitten by an infected mosquito. By contracting the disease, a person can become a source of infection for Aedes aegypti in urban areas. In addition to man, virus infection can also affect other vertebrates. Monkeys may develop wild yellow fever in an inapparent manner, but have enough virus to infect mosquitoes. One person does not transmit the disease directly to another.

Prevention

As the urban transmission of yellow fever is only possible through the bite of Aedes aegypti mosquitoes, prevention of disease should be done avoiding its spread. Mosquitoes are created in water and proliferate within and adjacent to households. Any container such as water tanks, tins and tires containing clean water are ideal environments for the mosquito's female to lay their eggs, from which larvae will be born that, after developing in the water, will become new mosquitoes. Therefore, stagnant water should not be allowed to accumulate in unopened containers. In order to eliminate the adult mosquito, in the event of an epidemic of dengue or yellow fever, the application of insecticide should be carried out by means of "smoke." In addition, individual protection measures, such as vaccination against yellow fever, should be taken. For those who live or are going to travel to areas with signs of the disease.Another preventive measures are the use of insect repellent, mosquito nets and clothes that cover the whole body.

Source: FIOCRUZ