Mosquito surveillance data reports the abundance of various species of mosquitoes in San Mateo County.
Different mosquito species have different seasonal life cycles, bite different hosts at different times of day, and transmit different diseases. It’s important for District staff to know what mosquito species are present in order to minimize annoyance and, more importantly, disease risk to humans and domestic animals.
These graphs track the number of mosquitoes of each species (vertical axis) by month (horizontal axis). These are frequently compared to a five-year average of each mosquito species by month, allowing staff to determine whether we have more, less, or about the same mosquito populations as most years.
For more information about how the District traps mosquitoes for disease and population surveillance, see Mosquito Trapping and Pools.
Mosquito larval surveillance data from April 2016 is in. You can see the average number of mosquito larvae per sample (“dip”) for the various areas of the county on the graph below.
Mosquito surveillance data from February 2016 is in. You can see how this year’s mosquito populations stack up against the 5-year average by clicking the graphic to the left.
Mosquito surveillance data from December 2015 is in. You can see how this year’s mosquito populations stack up against the 5-year average by clicking the graphic to the left.
Mosquito surveillance data from October 2015 is in. You can see how this year’s mosquito populations stack up against the 5-year average by clicking the graphic to the left.
Mosquito surveillance data from September 2015 is in. You can see how this year’s mosquito populations stack up against the 5-year average by clicking the graphic to the left.
Mosquito surveillance data from July and August 2015 is in. You can see how this year’s mosquito populations stack up against the 5-year average by clicking the graphic to the left.
Mosquito surveillance data from May 2015 is in. You can see how this year’s mosquito populations stack up against the 5-year average by clicking the graphic to the left.
Mosquito surveillance data from April 2015 is in. You can see how this year’s mosquito populations stack up against the 5-year average by clicking the graphic to the left.
Mosquito surveillance data from March 2015 is in. You can see how this year’s mosquito populations stack up against the 5-year average by clicking the graphic to the left.
Mosquito surveillance data from February 2015 is in. You can see how this year’s mosquito populations stack up against the 5-year average by clicking the graphic to the left.
