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COVID-19 Vaccine Breakthrough Cases: Data from the States
By Anna Rouw, Jennifer Kates & Josh Michaud
U.S. CDC internal report says Delta variant as contagious as chickenpox - report
Mask mandates by state: Where are you required to wear a mask?
By Kate Mabus
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What the CDC's 'substantial' and 'high' levels of Covid-19 transmission actually mean
By Jessica Firger & Eric Levenson
CDC mask guidance made easier: Check this county COVID risk map : Shots - Health News
By Selena Simmons-Duffin
8 Things to Know About Breakthrough COVID Infections
By Rachel Nania
CDC Calls for Return to Universal Masking in Schools
By Sarah D. Sparks
As Covid Cases Rise All Over U.S., Lower Vaccination Rates Point to Worse Outcomes (Published 2021)
By Lauren Leatherby
CDC study shows three-fourths of people infected in Massachusetts coronavirus outbreak were vaccinated but few ...
By Carolyn Johnson, Yasmeen Abutaleb & Joel Achenbach
CDC: Delta as contagious as chickenpox | CIDRAP
By Stephanie Soucheray
CDC wants vaccinated Americans to wear masks indoors in Covid hot spots
By Adam Cancryn & Erin Banco
The Delta Variant Is Winning
By Katherine J. Wu
Mask mandates reimposed locally in defiance of state, CDC guidelines as cases rise
By Soo Rin Kim & Laura Romero
Breakthrough COVID infections show ‘the unvaccinated are now putting the vaccinated at risk’
By Laura Santhanam
Timeline: CDC mask guidelines during the COVID pandemic
By Deborah Netburn
CDC document warns Delta variant appears to spread as easily as chickenpox and cause more severe infection
By Paul LeBlanc, Elizabeth Cohen & Maggie Fox
CDC warns in internal document that 'war has changed' with the coronavirus
By Sara G. Miller, Shannon Pettypiece & Denise Chow
CDC under fire for decision to limit tracking of Covid-19 cases in vaccinated people
By Rachel Roubein & David Lim
About 99.999% of fully vaccinated Americans have not had a deadly Covid-19 breakthrough case, CDC data shows
By Deidre McPhillips & Christina Maxouris
CDC's new masking guidance prompted by science that emerged in just the last several days, Walensky says
By Madeline Holcombe & Jason Hanna
CDC updates guidance, recommends vaccinated people wear masks indoors in certain areas
By Jacqueline Howard
U.S. urges vaccinated Americans to wear masks indoors in many places
By Julie Steenhuysen & David Shepardson
Symptomatic breakthrough COVID-19 infections rare, CDC data estimates
By Arielle Mitropoulos
CDC reverses indoor mask policy, saying fully vaccinated people and kids should wear them indoors
By Berkeley Lovelace & Berkeley Lovelace Jr.
Should you be wearing a mask again? Here's a map of the Covid hot spots subject to the CDC's new guidance
By Nate Rattner
CDC study shows 74% of people infected in Massachusetts Covid outbreak were fully vaccinated
By Berkeley Lovelace & Berkeley Lovelace Jr.
CDC Changes Mask Guidance For Vaccinated People, Including In Schools : Shots - Health News
By Allison Aubrey
Vaccinated People With Breakthrough Infections Can Spread The Delta Variant, CDC Says
By Laurel Wamsley
C.D.C. Internal Report Calls Delta Variant as Contagious as Chickenpox (Published 2021)
By Apoorva Mandavilli
CDC urges vaccinated people in covid hot spots to resume wearing masks indoors
By Dan Diamond, Adam Taylor & Yasmeen Abutaleb
CDC mask guidelines: Map of high COVID transmission areas by county
By Adrianna Rodriguez, Mitchell Thorson & Ramon Padilla