Tuesday, 22 October 2019

West Nile fever: routes of infection, symptoms and treatment

West Nile fever: routes of infection, symptoms and treatment 

West Nile fever: routes of infection, symptoms and treatment

West Nile fever has stirred the civilized world, as little-known viral disease has already claimed more than 60 lives. In the last week of August alone, 24 people have died in Europe, 6 of which are in Romania's neighboring country.

A case of West Nile fever was recorded at the Alexander Hospital in Kyiv. The man who returned from vacation in Crete was sick.

Read also: West Nile fever patient reported in Kiev: difficult case

It should be noted that during the year 2018 there were 710 cases of West Nile fever in the European Union. This is three times more than last year.

Where did the dangerous virus come from?
West Nile fever, also called encephalitis in the region, is transmitted through mosquito bites, and its symptoms are similar to flu symptoms and include fever, headache and nausea. In people with signs of the disease, the mortality rate can reach 10%.

In severe cases, it can cause inflammation of the meninges and brain, damage to the mucous membranes.

West Nile fever was recorded in Africa. It is also dangerous because it can spread rapidly internationally, and can therefore be a health emergency.

West Nile virus infection occurs through mosquito bites

For the first time, the disease has caught the attention of physicians in 1999, when outbreaks occurred in the United States and Canada with the occurrence of serious and fatal cases - the disease has spread to different continents far from where it is spread.

The causative agent of West Nile fever is a virus of the Flaviviridae family of the genus Flavivirus. In its structure, it is similar to the viruses of the encephalitis group and the dengue virus.

Read also: Dangerous, poorly studied disease is spreading in Europe, Ukraine is also at risk

The virus is quite stable in the environment, tolerates drying and freezing well. The mosquito-borne virus is transmitted through the feeding of infected birds to the blood. During mosquito bites, the virus can enter humans and animals, where it can multiply and cause disease.

A very small proportion of human infections occur with organ transplants, blood transfusions, breastfeeding, and from mother to child.

West Nile fever: symptoms
After infection with the virus, the incubation period lasts 1-7 days, in people with impaired immunity - up to 2 weeks. Fever manifests itself in two forms - febrile and neuroinvasive.

The febrile form of the disease begins with a fever, rapid fever and is accompanied by symptoms of intoxication. Patients complain of weakness, headache and eye pain, body aches.



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