COVID-19 vaccines have saved more than 2 million lives in four years. This record makes them one of humanity’s greatest medical achievements. But what if these vaccines also improved survival for cancer patients? New research suggests that may be possible.

Preclinical results suggest that COVID-19 mRNA vaccines may enhance cancer treatment. Researchers found that these vaccines can improve outcomes for patients receiving a form of immunotherapy. The study linked mRNA COVID-19 vaccines to better survival in cancer patients. These results indicate potential new uses for the vaccine beyond infection prevention.

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On October 19, the World Health Organization announced a major milestone. The last Ebola patient in Congo was discharged from treatment. This event marks the start of a 42-day countdown to end the outbreak. The outbreak will be declared over if no new cases appear before the deadline.

The Ebola outbreak began on September 4 in Congo’s Bulape Health District in Kasai. It caused 64 total cases, including 53 confirmed and 11 probable. The WHO reported 43 deaths in the region. Only 19 patients survived, including the final person recently discharged.

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It’s hard to imagine millions of people going partially blind unnoticed. However, the sense of smell is much easier to overlook. People can live with a reduced sense of smell and never realize it. This condition can still create serious health and safety risks.

Millions of Americans may have lost their sense of smell unknowingly. COVID-19 can cause a partial or total loss of smell, called hyposmia or anosmia, respectively. Viruses disrupt the cells and receptors in nasal passageways. Sense of smell can recover, but it does not always return.

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Napoleon’s failed 1812 invasion of Russia remains a historic military disaster. His army entered Russia with about half a million soldiers. Yet, fewer than 100,000 returned, and some estimates fall as low as 10,000. Disease was one of several devastating forces behind this catastrophic loss.

A recent investigation uncovered clues about the infections that struck Napoleon’s troops. Researchers examined 13 teeth from male soldiers found in a mass grave in Vilnius, Lithuania. The teeth contained preserved tissue and blood traces that held microbial DNA fragments.

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It sounds like a horror movie. A hidden parasite lurks in the brains of millions of Americans without them knowing. Yet, this is not a fictional scenario. The Toxoplasma gondii parasite lives in 40 million Americans.

The illness usually goes untreated unless it causes serious complications. However, new research sheds light on a low-risk way to stop the parasite’s replication. Researchers at the Virginia-Maryland College of Veterinary Medicine studied the baseline function of T. gondii.

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