New screening guidelines are being released for colon cancer, lowering the initial age to begin screening and expanding eligibility across the country.
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Data on colorectal cancer (CRC) screening gathered over the past decade have prompted the American College of Gastroenterology (ACG) to update its guidelines, last issued in 2009.
The new recommendations, published online in the
American Journal of Gastroenterology,state that screening should start at age 45 for persons of average risk. We now know that the risk is higher than we appreciated for people from age 40 onward. Today, a 45-year-old has the same risk as a 50-year-old had 10 years ago, said Aasma Shaukat, MD, MPH, of the University of Minnesota School of Medicine in Minneapolis, in an ACG introductory podcast to the new guidelines.
Three new, fast-spreading variants of the virus that causes COVID-19 can evade antibodies that work against the original form that sparked the pandemic, new research shows.
With few exceptions, whether the antibodies were produced in response to vaccination or natural infection, or were purified antibodies intended for use as drugs, researchers found they needed more antibody to neutralize the new variants.
The findings, from laboratory-based experiments, suggest that COVID-19 drugs and vaccines developed thus far may become less effective as the new variants become dominant, as experts say they inevitably will. The researchers looked at variants from South Africa, the United Kingdom, and Brazil.