
Indiana sees first case of the West Nile virus in 2025. What to know and how to stay safe
Here's what to know about the reported case and how to protect yourself from mosquitoes.
There is currently only one reported case of West Nile virus in Indiana, in Vanderburgh County.
"The Indiana Department of Health expects to see additional West Nile virus cases as the mosquito season progresses," a news release states. "Taking precautions against mosquito bites can reduce the risk of disease caused by mosquito-borne viruses."
In 2024, Indiana had 11 human cases of West Nile virus. Officials don't identify the affected residents due to privacy laws.
State Health Commissioner Lindsay Weaver said with the large rainfall and high temperatures in the state, residents should take steps to remove mosquito breeding grounds from their property.
Steps to prevent mosquito-borne diseases include:
According to the IDOH, most people with West Nile virus will not have symptoms.
But some could experience mild flu-like ailments including fever, headache, body aches, joint pain, vomiting, diarrhea or a rash.
From Courier & Press: Vanderburgh County resident reported as first West Nile case of the year for Indiana
"A small number will develop a more severe form of the disease affecting the nervous system, including inflammation in the brain and spinal cord, muscle paralysis, or even death," the news release states. "People older than 60 years and those with weakened immune systems are at higher risk of severe West Nile virus disease.

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Hamilton Spectator
11 hours ago
- Hamilton Spectator
West Nile virus transmission spikes over August long weekend in Ontario — What you need to know
Ontario mosquito populations are still buzzing around the August long weekend, which also brings the risk of illness from their bites. Taz Stuart, an entomologist and mosquito expert, stressed West Nile virus transmission typically peaks around the August long weekend. 'In most parts of Canada, the highest transmission period is the August long weekend,' he said. 'The week after, you're probably going to see a higher number of human cases reported.' Canada conducts national human case surveillance during West Nile virus season, which typically lasts from mid-April to November. In 2022, preliminary Public Health Agency of Canada data shows 47 cases were reported in Canada . Public Health Ontario (PHO) reports 61 human cases of West Nile virus were confirmed in Ontario in 2023 — up from 29 the year before. Ottawa Public Health reports the majority of human cases occur in August and September . According to its Ontario Vector-Borne Diseases Tool , as of July 31 PHO hasn't reported any human cases of West Nile virus this year. However, mosquitoes have tested positive for West Nile virus in parts of Ontario, including in Niagara, Peel and Durham regions. The virus has also been confirmed in dead crows in Guelph and Northumberland County. Stuart explains culex pipiens mosquitoes , which are particularly good at spreading West Nile virus to humans, are plentiful right now in Ontario. 'They like hot, dry, weather,' he said. Not only are they the dominant type of mosquito right now, Stuart notes they're also 'sneaky biters' with a 'soft bite' that may not be as painful as others. Some of the most common mosquitoes in Ontario, the culex and the Aedes aegypti mosquito , are known to be vicious biters. 'They tend to bite a lot — that's really sometimes what bothers people,' he said. Stuart said some areas such as Ottawa might see more mosquitoes at this point in the summer because there's been more rain. Toronto and other areas that have seen less rainfall might see lower mosquito numbers. In cottage country, like elsewhere in the province, mosquito numbers will depend on your proximity to standing water and rainfall amounts. While black fly populations are waning, as they typically peak from May to June, horse flies and deer flies may be out in force. 'Deer flies and horse flies are more common — and it's all about location and how much water is around your cottage or tent,' said Stuart. 'You'll see higher numbers where there is water.' How bad bugs are, however, depends on the local environment and the amount of rainfall the area you're in has experienced, he stressed. Alice Sinia, an entomologist with Orkin Canada, predicted a high population of mosquitoes in Ontario as long as wet conditions seen in the spring held through summer. While mosquito populations vary across the province, Sinia predicted above-average numbers of mosquitoes in eastern and southern Ontario, including the Greater Toronto Area and cottage country areas of Muskoka, Haliburton and Kawartha. Mosquitoes need wet conditions to breed and their population is dependent on rainfall. If there's a lot of rain during the summer, into midsummer, we likely will see mosquito activity into the fall. However, if there are any prolonged dry conditions in the summer, that will lessen the numbers of mosquitoes because their breeding sites will dry out. Environment Canada reported there's been less rain than normal along the 401 corridor, while parts of northeastern Ontario have experienced higher than normal amounts. 'East of Lake Superior toward the Quebec border, they are the ones who have been getting more consistent storm activity,' Steven Flisfeder, Environment and Climate Change Canada's warning preparedness meteorologist, said of July's precipitation numbers. Typically, mosquitoes are common from May to September and are most active between dusk and dawn. Excess snow in parts of the province this past winter, combined with the wet start to spring and warmer temperatures, meant an intense start to the mosquito season. 'Whenever the population starts early in the season, it builds up,' Sinia explained. 'That means towards midspring, early summer and throughout the summer, we're going to really see a high population of mosquito.' Here are a couple of tips to help you reduce mosquito populations near your home or avoid bites when you're out: The Weather Network publishes a bug report featuring daily activity of mosquitoes, black flies and deer flies in specific areas. OFF publishes its OFFCast map and mosquito forecast . You can search your location and find out how bad the bugs are near you. Error! Sorry, there was an error processing your request. There was a problem with the recaptcha. Please try again. You may unsubscribe at any time. By signing up, you agree to our terms of use and privacy policy . This site is protected by reCAPTCHA and the Google privacy policy and terms of service apply. Want more of the latest from us? Sign up for more at our newsletter page .


Hamilton Spectator
a day ago
- Hamilton Spectator
First human case of West Nile virus acquired in Canada this year confirmed
TORONTO - The Public Health Agency of Canada says this year's first human case of West Nile virus acquired within the country has been confirmed in Toronto. The confirmation comes after Toronto Public Health said its first laboratory-confirmed case of the virus in 2025 is an adult resident of the city with no travel history. The virus is transmitted to humans through infected mosquitoes. PHAC's West Nile surveillance report says that as of July 12, two other Canadian residents were infected this year while travelling outside of the country. Its surveillance map shows West Nile detections in two mosquito pools in Ontario and one in Manitoba as of that date. Toronto Public Health says symptoms usually begin between two to 14 days after a mosquito bite and can include fever, headache, nausea, vomiting, body aches, skin rash, swollen lymph glands or a stiff neck. It says older adults and people with compromised immune systems are at higher risk of severe illness. People can prevent infection by avoiding mosquito bites — wear light-coloured long sleeves and long pants, use Health Canada-approved insect repellent, put tight-fitting screens on all windows and get rid of standing water in buckets, planters, pool covers and other containers to eliminate mosquito breeding grounds. This report by The Canadian Press was first published July 31, 2025. Canadian Press health coverage receives support through a partnership with the Canadian Medical Association. CP is solely responsible for this content. Error! Sorry, there was an error processing your request. There was a problem with the recaptcha. Please try again. You may unsubscribe at any time. By signing up, you agree to our terms of use and privacy policy . This site is protected by reCAPTCHA and the Google privacy policy and terms of service apply. Want more of the latest from us? Sign up for more at our newsletter page .


Boston Globe
a day ago
- Boston Globe
Second mosquito with EEE found in Massachusetts
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