The most recent traps to test positive for the virus were located in southeast Chatham last week.
The city will increase mosquito spraying twice a week throughout Sugar Land and will work with the Texas Department of State health Services to test mosquitos for West Nile Virus.
"Labor Day is often considered to be the unofficial end of summer", DPH State Epidemiologist Dr. Catherine Brown said.
Most people infected with West Nile Virus don't experience any symptoms, according to IPDH.
A Suffolk County man in his 50s was diagnosed on September 11, marking the fifth person in the county to contract the virus, health officials said in a statement.
The virus can not be spread directly from infected animals to humans or from person to person. "That's why it is important that people in greater Boston and elsewhere continue using insect repellents, covering exposed skin, and moving indoors when mosquitos are biting".
A year ago the state had 62 cases and two West Nile virus-related deaths.
The virus is spread by mosquitoes. About 1 in 5 people who are infected develop a fever and other symptoms. In rare cases, more severe illness can occur.