Covid-19 vaccine misinformation is rampant in an unexpected place: Mommy groups on Facebook. CNN's Elle Reeve takes a closer look.

CNN's Lucy Kafanov reports on coronavirus vaccine hesitancy in rural Oregon and how the state is taking measures to combat this reluctance.

CNN's John Berman speaks with the CDC Director Rochelle Walenksy to clarify mask guidance for vaccinated individuals as critics have argued that previous CDC guidance has been complicated.

New vaccine platforms are being developed that could transform access and ease of use for future pandemics, as well as for fighting existing diseases.

CNN's Erica Hill reports that Pfizer is seeking authorization for it's coronavirus vaccine for children ages 12-15 after trials showed 100% efficacy for that age group.

CNN's Chris Cuomo asked White House coronavirus adviser Andy Slavitt why the CDC stopped short of allowing those who have received the vaccine to entirely resume living normal lives.

President Joe Biden cited new guidance from the US Centers for Disease Control and Prevention -- which said vaccinated Americans do not have to wear masks outside in some situations -- to urge all Americans to go get a vaccine.

Dr. Sanjay Gupta discusses whether we should still be wearing masks outside even after getting vaccinated and answers viewers' other Covid-19 questions.

A former Trump official tells CNN's Elizabeth Cohen that they want the former President to make a PSA encouraging coronavirus vaccinations because his administration's legacy could be at stake.

Patients may not know when race correction is used in their treatment, but a new generation of medical students is calling on doctors to re-think the common practice. Read more about race correction in medicine.

CNN's Pamela Brown asks Senior adviser to the White House Covid-19 response team, Andy Slavitt, about reporting that fully vaccinated Americans would be able to visit Europe as tourists this summer.

Dr. Anthony Fauci addresses public concern surrounding a possible third-dose vaccine booster. Fauci tells CNN's Jim Acosta the need is not a matter of efficacy, but rather an extension of durability of protection against coronavirus.

1 in 8 couples struggle with infertility in the US according to the CDC. CNN's Alisyn Camerota and Chloe Melas talk with fertility specialist Dr. Tia Jackson-Bey about what they can do to improve their emotional health and gain better access to treatment.

With vaccine hesitancy still prominent in the US, CNN's Martin Savidge reports on the efforts to battle conspiracy theories and get people vaccinated for Covid-19 in Mississippi.

A CDC advisory committee voted to recommend resuming use of the Johnson & Johnson coronavirus vaccine, which has been linked to 15 cases of a very rare blood clotting condition, all in women. CNN's Dr. Sanjay Gupta and Dr. Leana Wen weigh in on the recommendation.

A mass vaccination site was canceled at Kansas City, MO's football stadium.

CNN's Dr. Sanjay Gupta discusses the CDC claim that the risk of Covid-19 surface transmission is low in comparison to airborne transmission.

Former President Barack Obama and NBA legend Shaquille O'Neal joined a slate of celebrities in urging Americans to get vaccinated during an hour-long NBC special aimed at boosting vaccine confidence.

CNN Senior Medical Correspondent Elizabeth Cohen discusses a statement released by Johnson & Johnson about other coronavirus vaccines.

Dr. Anthony Fauci, director of the National Institute of Allergy and Infectious Diseases, shares when he expects a decision to be made about the Johnson & Johnson Covid-19 vaccine, predicting the vaccine would come back on the market with restrictions or warnings.

CNN's Chloe Melas, Alisyn Camerota, Brian Stelter and Susan Hendricks meet with fertility specialist Dr. Tia Jackson-Bey to discuss their personal journeys with infertility.

Maryland's newest high-volume mass vaccination site held its soft launch Thursday at Navy-Marine Corps Memorial Stadium in Annapolis, administering 500 Moderna COVID-19 vaccines.

CNN medical analyst Dr. Celine Gounder discusses the risk of undermining vaccine confidence after renowned statistician Nate Silver tweeted about vaccine hesitancy.

CNN's John Avlon puts into perspective the likelihood of suffering from rare blood clots that have been reported in only six of the 6.8 million Johnson & Johnson Covid-19 vaccine recipients in the US.

CNN's Alexandra Field reports on the CDC and FDA's recommendation the US pause Johnson & Johnson vaccine use over blood clot concerns "out of an abundance of caution."

A college in Maine is issuing $50 fines for students caught not wearing masks.

CNN's Wolf Blitzer talks to Dr. Anthony Fauci about what activities he thinks are safe for Americans who are fully vaccinated, and what he personally feels comfortable doing now the he is fully vaccinated.

CNN's Jim Acosta talks with Dr. Jonathan Reiner of George Washington University about the coronavirus surge Michigan is experiencing, and Texas governor Greg Abbott's claim that, despite admittedly not knowing what herd immunity is, Texas is close to reaching it.

Advocates in Maine are going door-to-door in order to help combat vaccine hesitancy. CNN's Jason Carroll reports.

As the US set a new single-day vaccine record with 4.6 million doses administered in a day, Michigan grapples with a rise of Covid-19 cases. CNN's Evan McMorris-Santoro reports.

New Hampshire Governor gets J&J vaccine at NH Motor Speedway

The founder of the South Beach Wine and Food Festival speaks to CNN's Victor Blackwell about why his event plans to require proof of vaccinations even after Florida Gov. Ron DeSantis signed an executive order banning Covid-19 "vaccine passports."

A community college in Kansas is paying its employees $250 to get COVID-19 vaccinations.

CNN's Dr. Sanjay Gupta explains how Abbott's latest rapid antigen test works, expounding on concerns about the test's accuracy.

CNN's chief medical correspondent Dr. Sanjay Gupta discusses new polls on overall vaccinations against Covid-19 in the US and the origins of vaccine hesitancy.

About a quarter of adults in the United States are fully vaccinated, according to the CDC. But as CNN's Alexandra Field reports, health experts are focusing on younger adults who have not yet been vaccinated, as well as children, who they say are spreading coronavirus through sports and daycare.

Jessamyn Smyth, a Covid-19 long hauler, hopes that two Pfizer vaccine doses may be what finally delivers her from the lasting effects of a virus that wreaked chaos in her life. CNN's Elizabeth Cohen has more

European drug regulators have confirmed a link between the Oxford-AstraZeneca Covid-19 shot and rare blood clots, as UK authorities recommended that people under 30 should take alternative vaccines.

CNN's Nick Watt reports that the more contagious coronavirus variant first found in the United Kingdom is now the most dominant strain in the United States.

The B.1.1.7 coronavirus variant first identified in the United Kingdom is now the most common strain of Covid-19 in the United States, according to US Centers for Disease Control and Prevention Director Dr. Rochelle Walensky.

Dr. Anthony Fauci explains why he considers flying a low-risk activity at the current state of the Covid-19 pandemic, but emphasizes that the risk could be even lower if more travelers get vaccinated.