Briefs

Get the Updated COVID-19, Flu Vaccines for Maximum Protection This Winter

Heading into December, some residents may be questioning whether they missed the window of opportunity to get effective protection against this winter’s respiratory viruses before holiday festivities begin. The best time to get vaccinated is at least two weeks before gathering, but there is still a benefit for getting vaccines at any time.  

Spread of respiratory viruses tends to increase this time of year, when people are gathering, traveling and spending more time indoors. Local data shows that circulation of respiratory viruses, including COVID-19, flu and respiratory syncytial virus or RSV, is beginning to increase in Los Angeles County and getting vaccinated now can still provide protection against severe illness throughout this winter’s respiratory virus season.

Levels of flu and RSV are measured by looking at the percentage of lab tests that are positive at sentinel surveillance laboratories. This week for flu, 6.8% of specimens were positive, compared to 3 percent two weeks prior. For RSV, 13% of specimens tested positive compared to 9 percent two weeks earlier.

Since Nov. 1, in Los Angeles County, the reported daily average of COVID-19 cases has increased from 198 to 249. The number of reported COVID-19 cases helps to illustrate larger COVID-19 trends; however, the total is an undercount due to the large number of home test results that are not reported, and the data also does not catch incidences when people are infected but do not test. If all three viruses continue to increase in Los Angeles County, there is potential for a “tripledemic” that could strain local health care resources.

The Los Angeles County Department of Public Health or Public Health monitors wastewater levels of SARS-CoV-2, the virus that causes COVID-19 infection, for a more comprehensive measure of COVID-19 in the community. On Nov. 1, wastewater concentrations were at 11% of the peak concentration observed last winter. For the most recent reported week, the concentration is 24% of the 2022-23 winter peak, more than doubling over the past four weeks. Current levels are not a cause for increased concern for rapid spread, yet the trend indicates that people should be thinking about increased protection for this winter.

More information, including links to schedule, how to find pop-up vaccination events and answers to questions about vaccines, can be found at ph.lacounty.gov/vaccines.

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