** WARNING! The story is graphic and has details of infection.**
Toronto Public Health confirmed to FoxNews.com on Monday that there have been three confirmed cases of variant Omicron tetravalent (VTT) vector-borne disease in the city.
The cases involve a person who is a relative of another person who has contracted the disease, according to Public Health.
VTT is caused by the Aedes aegypti mosquito, an insect whose range of breeding holes is much longer than the insects sometimes used for home pest control and gardening.
The mosquito is also often linked to vector-borne diseases such as dengue, chikungunya and yellow fever. In addition, it may pass along the Zika virus and spread Lyme disease through biting a mosquito infected with the bacterium Borrelia burgdorferi.
Health officials said at this time there is no known link between this year’s VTT cases and the Zika virus.
Public Health said the cases of VTT were discovered in recent days after the People’s Health Network identified symptoms such as fever, chills, muscle aches, joint pains and cough. The relatives said they were not exposed to the disease outside of Toronto during any travel.
VTT is not contagious through human contact.
Vector-borne disease is transmitted to humans through bites from infected female Aedes aegypti mosquitoes that lay eggs during warmer months.
This latest data comes less than a month after 21 cases of chikungunya were confirmed in the United States. People infected with chikungunya typically develop symptoms of fever, headache, muscle aches, joint pain and rash within about a week. Most people who become infected recover fully, but in rare cases chikungunya can be fatal.
More than 50 percent of cases are transmitted by mosquito bites. One source of the infection is the blood of infected people.