A new study conducted by the Centers for Disease Control and Prevention (CDC) discovered that the mRNA COVID-19 vaccines authorized by the Food and Drug Administration (Pfizer-BioNTech and Moderna) reduce the risk of infection by 91 percent for fully vaccinated people.

Initial results from the study were first shared in March 2021. According to CDC, there were 3,975 participants who completed weekly SARS-CoV-2 testing for 17 following weeks (between December 13, 2020 – April 10, 2021) in eight U.S. locations in the new analysis. Participants who became infected with SARS-CoV-2 were placed into their own individual group and compared to a group of unvaccinated, infected participants. The studies showed that those who were fully or partially vaccinated while testing positive for COVID-19 were less likely to spread the virus to others.

As stated by CDC, the data collected shows “Fully or partially vaccinated study participants had 40 percent less detectable virus in their nose and the virus was detected for six fewer days, compared to those who were unvaccinated when infected.” Also, partially or fully vaccinated people were 66 percent less likely to test positive for SARS-CoV-2 infection for more than one week compared to those who were not vaccinated.

Overall, the data collected by CDC also shows a correlation with the reduced spread of other viruses, such as varicella and influenza. The study findings support CDC’s recommendation to get fully vaccinated against COVID-19 as soon as people can.

To learn more about COVID-19 vaccine information, speak with a Community Resource Specialist: (408) 350-3200, option 1.

Lung Cancer Screening

Medicare Part B covers lung cancer screening using low-dose computed tomography (LDCT) if the individual meets all the following criteria:

  • Aged 55 to 77
  • No signs or symptoms of lung cancer
  • Current smoker or quit smoking within the past 15 years
  • Tobacco smoking history averaging one pack per day for 20 years (“20 pack-years”)
  • An order from a doctor or healthcare provider

Take advantage of these preventative services offered by Medicare by asking for them for yourself or your loved one. In this way, older adults can reduce their risk of developing substance abuse disorders or mitigate its effects to maintain healthier lifestyles.


  1. National Institute on Drug Abuse. (2020, July). Substance use in older adults drugfacts. Substance Use in Older Adults DrugFacts | National Institute on Drug Abuse (NIDA) (nih.gov)
  2. gov. (n.d.). Preventive & screening services. preventive services (medicare.gov)


This project was supported by the Administration for Community Living (ACL), U.S. Department of Health and Human Services (HHS) as part of a financial assistance award totaling $94,686 with 100 percent funding by ACL/HHS. The contents are those of the author(s) and do not necessarily represent the official views of, nor an endorsement, by ACL/HHS, or the U.S. Government.