During the past two weeks, Tamaulipas health officials reported 48 new Zika cases.

“We don’t know if these cases are occurring near the border or further down in Tamaulipas, but being that it is an area where most of our residents go into, it’s what we have to look at as health officials,” said Brownsville Public Health and Wellness Department Director Art Rodriguez.

To make residents aware of the dangers infected mosquitoes pose, the department organized a door-to-door canvass. From Monday through Thursday, more than 1,000 volunteers will inspect yards for standing water.

The Brownsville Public Health and Wellness Department is also handing out Zika prevention kits that contain insect repellent, mosquito nets, condoms, and mosquito dunks, which stop mosquitoes from breeding.