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A Project of The Annenberg Public Policy Center

COVID-19: The Unvaccinated Pose a Risk to the Vaccinated

COVID-19: The Unvaccinated Pose a Risk to the Vaccinated

Q: How do people who have not been vaccinated against COVID-19 pose a risk to people who have been vaccinated?

A: An unvaccinated person who is infected with COVID-19 poses a much greater risk to others who are also unvaccinated. But vaccines are not 100% effective, so there is a chance that an unvaccinated person could infect a vaccinated person — particularly the vulnerable, such as elderly and immunocompromised individuals.

Exploring the Legality of COVID-19 Vaccine Mandates

Exploring the Legality of COVID-19 Vaccine Mandates

Q: Can employers, colleges and universities require COVID-19 vaccinations?

A: Generally, they may require immunizations. But there is some uncertainty about the legality of mandating vaccines authorized for emergency use by the U.S. Food and Drug Administration.

No Evidence Vaccines Impact Fertility

No Evidence Vaccines Impact Fertility

Q: Do the COVID-19 vaccines cause infertility?
A: There’s no evidence that approved vaccines cause fertility loss. Although clinical trials did not study the issue, loss of fertility has not been reported among thousands of trial participants nor confirmed as an adverse event among millions who have been vaccinated. 

What Do the New Coronavirus Variants Mean for the Pandemic?

What Do the New Coronavirus Variants Mean for the Pandemic?

Q: What are the risks of the newly identified coronavirus variants?
A: It’s not yet known whether mutant versions cause more severe disease, but some are likely more contagious. Scientists expect vaccines will work but are monitoring the situation.

Does Vitamin D Protect Against COVID-19?

Does Vitamin D Protect Against COVID-19?

Q: Does vitamin D help protect against COVID-19?

A: Some scientists have hypothesized vitamin D might be helpful, but there is no direct evidence that vitamin D can prevent COVID-19 or lessen disease severity. Nevertheless, it should be part of a healthy lifestyle.

No Evidence to Back COVID-19 Ibuprofen Concerns

No Evidence to Back COVID-19 Ibuprofen Concerns

Q: Does ibuprofen make COVID-19 worse?

A: There is no evidence that ibuprofen or other non-steroidal anti-inflammatory drugs can make COVID-19 cases more severe. You should consult your doctor before changing medications.

No Link Between Harvard Scientist Charles Lieber and Coronavirus

No Link Between Harvard Scientist Charles Lieber and Coronavirus

Q. Is it true that federal agents arrested Harvard professor Charles Lieber for creating the coronavirus?

A: No. Lieber, a nanoscientist, was charged for lying about his participation in a Chinese recruitment program and his affiliation with a Chinese university. He is not accused of being a spy and has no connection to the new coronavirus.

The Facts on Mental Illness and Mass Shootings

The Facts on Mental Illness and Mass Shootings

Q: Do people with serious mental health disorders pose a greater risk of becoming mass shooters?
A: People with mental illnesses are somewhat more likely to be violent than those without a diagnosis. But a majority are never violent, and very little is known specifically about mass murder.

Amazon Doesn’t Produce 20% of Earth’s Oxygen

Amazon Doesn’t Produce 20% of Earth’s Oxygen

Q: Does the Amazon produce 20% of the world’s oxygen?

A: No. Scientists estimate the percentage is closer to 6 to 9%, and the Amazon ultimately consumes nearly all of that oxygen itself.