Mosquito trap in Windsor-Essex captures known carriers of Zika and West Nile viruses

Two mosquitoes that are capable of carrying the Zika and West Nile viruses have been trapped in the Windsor region.

The Aedes albopictus mosquitoes — also known as Asian Tiger Mosquitoes — were captured by the Windsor-Essex County Health Unit in May and have not tested positive for either virus.

After the discovery of the Aedes species in the area in 2016, the health unit conducted 'enhanced mosquito surveillance' to monitor for the presence of the Aedes species in Windsor and Essex County.

In 2017, three adult Aedes albopictus mosquitoes were identified in enhanced mosquito traps.

"Keeping our community informed about infectious diseases and the local mosquito surveillance programs is a key role of public health," said Wajid Ahmed, Acting Medical Officer of Health at the Windsor-Essex County Health Unit.

"The discovery of the Asian tiger mosquitoes again this year is an important reminder to everyone that we should continue to protect ourselves and our families from mosquito bites."

The greatest risk to contracting the Zika virus continues to be centred on those who have travelled to Zika-risk areas — such as South America, the Caribbean and Florida — or who are or have been in sexual contact with recent travellers of those areas.

Aedes albopictus

Unlike many Ontario mosquitoes, Aedes albopictus mosquitoes are aggressive daytime biters, with peaks in activity in the early morning and late afternoon.

These mosquitoes do not breed in ponds, puddles or marshes. They typically lay eggs in and near standing water in items such as buckets, bowls, animal dishes, flower pots and vases.

It is important to change water regularly — especially in pet dishes and water in bird baths.

Individuals can protect themselves from mosquito bites by:

• Using insect repellents that contain DEET, Icaridin or other approved ingredients on clothing as well as exposed skin.
• Wearing long-sleeved shirts, long pants, and a hat when outdoors — light-coloured clothing preferred.
• Making sure doors and window screens fit securely and are free of holes

The Windsor-Essex County Health Unit will further investigate the site where the two adult Aedes albopictus mosquitoes were found.