MOSQUITOES IN LOS ANGELES COUNTY: What You Need to Know Presented - PowerPoint PPT Presentation

MOSQUITOES IN LOS ANGELES COUNTY: What You Need to Know Presented by: ANAIS MEDINA DIAZ Public Information Officer Greater Los Angeles County Vector Control District

Our District 1,330 Square Miles 35 Cities and portions of Unincorporated Los Angeles County 6 MILLION Residents

What We Do Mosquito Disease Public Education Control Surveillance and Outreach

What We Do Underground Storm Drains Waterways (rivers & channels) Street Gutters Pools & Ponds Mosquito Traps Mosquito Identification

Mosquito Life Cycle • After a female mosquito bites us, she will look for standing water to lay her eggs • Will Lay 100-350 eggs • 4 life stages Larvae • 5-7 days from egg to adult • When temperatures increase 3-5 days

CULEX Mosquito Threats in Our Area Activity Diseases ● Dusk and Dawn West Nile virus ● St. Louis encephalitis ● Western equine encephalitis

AEDES Mosquito Threats in Our Area Activity Diseases ● All Day Zika* ● Aggressive Biter Dengue* ● Prefers Human Blood Chikungunya* ● Yellow Fever* ● Canine Heartworm *No Local Transmission

FACTS SYMPTOMS ● WNV is Endemic If bitten by an infected mosquito: • 70-80% will have no symptoms which means it is present in Los Angeles • 1 in 5 will develop flu-like symptoms County every year • Symptoms: tiredness, headache, body ● WNV is a bird virus aches, fever ● When a mosquito • 1 in 150 become severely ill bites an infected bird • Severe symptoms: disorientation, that virus is coma, tremors, seizures, muscle transmitted to the weakness, and paralysis mosquito and then is • Greatest Risk: those over 50 years, and transmitted to a those with weakened immune systems human West Nile virus • There is no vaccine or treatment for West Nile virus

In California: 2020 WNV + Mosquitoes: 1,982 2020 WNV + Human Cases: 46 In GLACVCD: 2020 WNV + Mosquitoes: 204 2019 WNV + Mosquitoes: 61 2020 WNV + Human Cases: 13 2019 WNV + Human Cases: 17 http://westnile.ca.gov/ To view latest WNV activity: www.GLACVCD.org

Aedes Mosquito

Invasive Aedes Expansion (2013 – 2019)

Invasive Aedes Expansion (2013 – 2019)

Your New Neighbor ● Thrive in urban environments ● Thrive indoors & outdoors ● Man-made container breeders ○ Lay eggs on sides of containers that can be viable for years

Aedes eggs Aedes Eggs Aedes eggs can survive without water for over a year, and will hatch when water is present. Scrub container with a steel wool, soap and water and store it or throw away.

▪ Mosquito Watch (MW) is a neighborhood approach to mosquito control Mosquito ▪ Program Goal: ○ Educate, mobilize, and empower residents to take action and protect their families and Watch neighborhood from mosquitoes and the diseases they can transmit. ▪ Mosquito Watch was launched to provide residents with the tools and resources to take an active role in reducing the threat of mosquito-borne disease in their neighborhoods.

Mosquito Watch Take the Pledge 1 Advocate 2 Mobilize 3 Champion 4

Highlights ● Mosquitoes need STAGNANT WATER to lay eggs & go through their life cycle ● Mosquitoes transmit diseases such as WEST NILE VIRUS, Zika, DENGUE FEVER, etc. ● TIP and TOSS containers that hold any amount of water ● Wear INSECT REPELLENT & keep SCREENS ON DOORS & WINDOWS ● Mosquito control is a SHARED RESPONSIBILITY ● SHARE what you learned with friends & family www.tiptosstakeaction.org

THANK YOU! ANAIS MEDINA DIAZ /GLAmosquito Public Information Officer @GLAmosquito amedinadiaz@glacvcd.org (562) 944-9656 @GLAmosquito