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What is the risk of mosquito-borne diseases? | news



Summer is already half past, but the mosquito season is still buzzing.

For the last leg of this summer, here are some tips to keep these pests at bay.

According to Dave Neitzel, a borne disease vector epidemiologist at the Ministry of Health of Minnesota, mid-July to mid-September is a high-risk season for mosquito-borne diseases.

Neitzel said that the major mosquito-borne viruses in the Rice County area include West Nile virus and La Crosse encephalitis.

According to the Minnesota Department of Health, there were 30 cases of West Nile virus in the state last year; There were 83 in 201

6. Since 1985, there have been 147 cases of La Crosse Encephalitis virus in 22 Minnesota counties, mostly in the southwestern part of the state.

According to Neitzel, West Nile first appeared in Minnesota in 2002, with 48 human cases, two of them from Rice County. Culex tarsalis, the mosquito that transmits the West Nile virus, is seen in open agricultural areas.

According to the Minnesota Department of Health, people will typically be asymptomatic or have flu-like symptoms. There are two forms of West Nile: West Nile Fever and West Nile Encephalitis. Twenty percent of bites attract West Nile fever, while one in 150 people suffers from the severe form of West Nile encephalitis.

West Nile fever can include headache, high fever, sore throat, vomiting. Nausea, muscle pain, rash, tiredness and swollen lymph nodes. According to Neitzel, people who typically suffer from the disease are middle-aged or older. When it comes to younger patients, it's usually not that serious.

People contracting West Nile-encephalitis may experience a change of mental state, vomiting, photosensitivity, altered reflexes, seizures (less frequently) and acute flaccid paralysis rarely in patients with severe case). Less than 1 percent of people experience neurological symptoms typically associated with encephalitis or meningitis.

Culex tarsalis, the mosquito that transmits the West Nile virus, is typically present at dusk and dawn. According to Elizabeth Shiffman, an epidemiologist at the Department of Health of Minnesota, this mosquito typically lays its eggs in semi-permanent larger and open areas, such as drainage ditches, with their eggs on top of the water, sticking together like a raft. 19659002] Most people who get infected will not feel any symptoms. Severe cases include symptoms such as headache, fever, lethargy and nausea. The disease can progress to symptoms such as disorientation, coma or seizures.

La Crosse's disease typically occurs in children. Neitzel said that children suffering from the disease are more affected. When adults contract it, they tend to fight it more easily.

La Crosse encephalitis is transmitted by the tree-hole mosquito, according to Neitzel. The Tree Midge is seen during the day and in wooded areas. The Treehole mosquitoes tend to lay their eggs in different places, usually containers like a bucket or a tree hole, with their eggs just above the waterline.

There is no treatment for both diseases except supportive care until the disease subsides

When it comes to repelling mosquitoes, Neitzel recommends a mosquito repellent containing DEET and lemon eucalyptus oil. Both Neitzel and Schiffman noted the importance of maintaining farms and ensuring that mosquitoes do not have stagnant water to lay their eggs. Schiffman said that mosquitoes could lay eggs in such small plastic bottles.

Schiffmann said that people should be encouraged to go outside and enjoy themselves, but to be aware of the risks and reduce the risks by using insect repellents and ensuring there is no stagnant water outside.

Reach Reporter Clare Bender at 507-333- 3128 or follow her on Twitter @FDNclare.

© Copyright 2018 APG of Southern Minnesota. All rights reserved.


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