Laboratory Staff


Angie Nakano
Laboratory Director

About Angie

Angie began her career in Vector control as a seasonal laboratory assistant with the District back 2005.  From 2006-2012 she was a vector ecologist in the SMCMVCD laboratory. She was the vector ecologist for Santa Clara County, performing all in-house PCR testing for Lyme disease in ticks and WNV in birds and mosquitoes for three years, then moved up to supervise all aspects of the Marin/Sonoma MVCD laboratory as the Scientific Programs Manager in 2015.  In 2017, she left that position to come back to the District. 


Tara Roth, Ph.D.
Vector Ecologist

About Tara

Tara Roth has a B.S. in Evolution, Ecology and Biodiversity from the University of California Davis, an M.S. in Ecology and Systematics from San Francisco State University, and a PhD from the University of California Davis in Integrative Pathobiology with a designated emphasis in the Biology of Vector Borne Diseases. Before joining the San Mateo Vector Control District her research focused on the ecology and epidemiology of tularemia in the California Central Valley.

Vector Ecologist Warren Macdonald holds a specimen while sitting in the laboratory wearing a lab coat.

Warren Macdonald, M.Sc.
Vector Ecologist

About Warren:

Warren Macdonald joined the San Mateo County Mosquito and Vector Control District in July of 2013. He is working primarily on molecular testing of disease vectors through quantitative real-time polymerase chain reaction (qRT-PCR). These tests are an integral part of the disease surveillance program due to their ability to detect West Nile virus in birds and mosquitoes as well as Lyme disease in ticks.  Warren is also responsible for maintenance of a laboratory colony of Culex  pipiens mosquitoes for use in resistance and efficacy tests.

Vector Ecologist Tina Sebay walks through a green grass dragging a large white flag.

Cheryl Tina Sebay
Vector Ecologist

About Tina:

Tina has worked in vector control for 15 years, starting as a seasonal employee at Contra Costa and Northwest Mosquito and Vector Control Districts before transitioning to permanent positions at San Gabriel Valley Mosquito and Vector Control District and Alameda County Mosquito Abatement District. She has worked at San Mateo County Mosquito and Vector Control District for 10 years, first as a Vector Control Technician and then in the District laboratory as a Vector Ecologist.

Vector Ecologist Theresa Shelton holds a chicken.

Theresa Shelton
Laboratory Technician

About Theresa:

Theresa has been with the District since 2008.  She works with the laboratory on surveillance of invasive Aedes aegypti mosquitoes, West Nile Virus surveillance, mosquito population monitoring and identification, general arthropod identification, surveillance of tick-borne diseases, and data analysis. 


Alex Flores
Seasonal Aedes Surveillance Technician

Alex joined the District as a seasonal Aedes surveillance technician in May, 2018. He has previously worked for the District as a seasonal vector control aide in 2014, 2016, and 2017.