Travelers coming back from the Olympic Games in Rio and other vacation spots where the Zika virus is spreading are urged to take precautions upon return to help prevent the spread of the virus in California. While the virus is primarily transmitted by Aedes mosquitoes, it can also pass from one person to another during sex.
Since we started reaching out to the public about reporting suspected invasive Aedes mosquito sightings, we’ve gotten a lot of mosquito photos in our email! That’s great, but mosquitoes are pretty small and they can be hard to identify in photos.
Fortunately our friends at iNaturalist have been dealing with this problem for a while, and they have some tips for taking detailed mosquito photos with an iPhone:
1. put the mosquito on a white background, like a blank sheet of paper
On Sunday night, Aug. 14th, in response to the discovery of adult mosquitoes infected with West Nile virus, San Mateo County Mosquito and Vector Control District conducted an adult mosquito control treatment in the Marina Lagoon area of San Mateo and Foster City. Since this treatment, there has been an 87% reduction in adult mosquitoes in this area, and no further mosquito samples have tested positive for West Nile virus.
On August 12th San Mateo County Mosquito and Vector Control District (SMCMVCD) detected West Nile Virus (WNV) in adult mosquitoes collected from the Marina Lagoon area of San Mateo. These mosquitoes were collected by the District laboratory staff during disease surveillance.
Mosquito samples collected from Atherton following San Mateo County Mosquito and Vector Control District’s adult mosquito control treatment on Thursday, Aug. 4th, have tested negative for West Nile virus.
“Although we didn’t find infected adult mosquitoes this week, residents are encouraged to continue to take basic precautions against mosquito bites,” said the District’s Public Health Education and Outreach Officer, Megan Caldwell.
California Department of Public Health (CDPH) Director and State Health Officer Dr. Karen Smith today announced the first confirmed death in California due to West Nile virus (WNV). The deceased person was a senior citizen in Sacramento County.
The California Department of Public Health (CDPH) reported today that two infants with Zika-related microcephaly have been born in California to women who had Zika virus infections during pregnancy after spending time in a country where the virus is endemic. While mosquitoes that can carry the virus have been found in 12 California counties, there is no evidence these mosquitoes are transmitting Zika in the state at this time.