This week, a COVID-19 outbreak in Massachusetts has led many around the country to question the effectiveness of the vaccine. 

The CDC reported that about three-fourths, or 346, of the 469 people who were infected in the outbreak were fully vaccinated. Four of those people were hospitalized. 

Brett Kokinadis, 2nd Vice-Chair of the Santa Fe Republican Party, criticized New Mexico Gov. Michelle Lujan Grisham over the vaccine and mask mandates, tweeting, "@GovMLG we're done with your edicts. "Three-fourths of people infected in a MA Covid-19 outbreak were fully vaccinated against the coronavirus with four of them ending up in the hospital, according to new data published Friday by the CDC."

According to CNBC, new data published in the U.S. agency's Morbidity and Mortality Weekly Report has found that there is as much of the virus in the nose of a fully vaccinated person who becomes infected as in an unvaccinated person who becomes infected.

"This finding is concerning and was a pivotal discovery leading to CDC's updated mask recommendation," CDC Director Dr. Rochelle Walensky said in a statement, as reported by CNBC. "The masking recommendation was updated to ensure the vaccinated public would not unknowingly transmit virus to others, including their unvaccinated or immunocompromised loved ones."

This outbreak has been a factor in the CDC suggesting that even those who have been fully vaccinated should still wear masks. New Mexico has experienced 1,000 new outbreak cases of COVID-19 over the weekend of July 31-Aug. 1, KOB 4 reported.