�������t¶��

Yellow fever is caused by a virus transmitted to humans by infected mosquitoes.

The region has also experienced outbreaks of malaria, exacerbated by the floods which leave pockets of standing water that act as breeding grounds for the mosquitos that carry the disease.

Vector control officials are warning that swimming pools in Altadena and the Pacific Palisades could turn into breeding grounds for disease-carrying mosquitoes.

“Cooler weather has temporarily suppressed mosquito activity, but that will change quickly as we move further into spring,” Farned said.

“Climate change has allowed the expansion of mosquito vectors into new areas exposing more humans,” Vaughan said.