Should San Mateo County residents, particularly seniors and those with underlying medical conditions, consider the Los Angeles County Department of Public Health’s recommendation on indoor masking issued on June 28?

It’s strange seeing this recommendation from Southern California that goes against the Centers for Disease Control and Prevention and the California Department of Public Health that state that if you are fully vaccinated, you do not need to wear a mask unless taking public transit and a few other exceptions. They appear to be far more concerned about the Delta variant — which the CDC states now accounts for over half of all new coronavirus infections — than the Bay Area.

The San Mateo County COVID-19 dashboard on July 7 indicates that the effective reproduction number (R-effective) is 1.34, meaning that infections are on the rise. In fact, the Covid Act Now database shows the reproduction number, 1.29 on July 7, to be the second-highest in the state after San Benito County. The state average is 1.09 (anything over 1 means infections are increasing).

Covid Act Now also indicates that San Mateo County has the state’s fifth-highest case incidence of 7.3 daily new cases per 100,000 people. The state average is 3.3 per 100,000.

If you don’t want to be listed as a vaccine breakthrough infection statistic, it might be wise to consider what Los Angeles Public Health is recommending.

Irvin Dawid


Recommended for you

(3) comments


I'll continue to wear a mask (except outside with few people around) and try to not enter enclosed areas with a crowd.

Am in the high risk categories and have had 2 Pfizer shots...but the efficacy is NOT like most others. They would have the 95-97, but with my immunotherapy IV...my number is down.

UCSF won't provide a definitive number, as they don't know. Guessing in the 70 to maybe 50 range

With the Delta ravaging the world and reports of breakthrough infections to those who are 'healthy'...leaves to continue wearing a mask and avoiding crowds.

We are lucky that our leaders in the State and locally, dealt with Covid-19 early and maintained a high level

News has reported so many that let their guard down and reopened too early. Only to have infection/death rates raise.

Pet peeve on this topic...the virus didn't come over via the air currents, but via PEOPLE traveling to areas with high infection rates


Especially. This person is continuing to wear a mask! The differences in advisories are going to cause major consequences.

Irvin D.

Thanks for your positive comment.

I sort of regret how I ended my letter. The focus should not be on personal health but public health. While we know vaccines reduce viral intake, meaning transmission is greatly reduced, it is still unknown to what degree that asymptomatic, fully vaccinated people can transmit the virus, presenting a threat to unvaccinated adults and children and vaccinated but immunocompromised adults.

The main reason to mask indoors in public places is to reduce transmission as well as protecting one's own health.

On a side note, I've come to have much respect for WHO. I believe their guidance to be superior to that of the CDC, particularly after their May 13 masking guidance (see my post on Planetizen: "Will CDC's Revised Guidance for Fully Vaccinated People Prolong the Pandemic?"


Welcome to the discussion.

Keep it Clean. Please avoid obscene, vulgar, lewd, racist or sexually-oriented language.
Don't Threaten. Threats of harming another person will not be tolerated.
Be Truthful. Don't knowingly lie about anyone or anything.
Be Nice. No racism, sexism or any sort of -ism that is degrading to another person.
Be Proactive. Use the 'Report' link on each comment to let us know of abusive posts.
Share with Us. We'd love to hear eyewitness accounts, the history behind an article.

Thank you for visiting the Daily Journal.

Please purchase an Enhanced Subscription to continue reading. To continue, please log in, or sign up for a new account.

We offer one free story view per month. If you register for an account, you will get two additional story views. After those three total views, we ask that you support us with a subscription.

A subscription to our digital content is so much more than just access to our valuable content. It means you’re helping to support a local community institution that has, from its very start, supported the betterment of our society. Thank you very much!