A diagnosis of cancer one year before infection was not associated with worse outcomes; air transport carries risks from COVID

By Nancy Lapid

(Reuters) – The following is a summary of some recent studies on COVID-19. These include research that guarantees further research to confirm the findings and which has yet to be confirmed by peer review.

The old diagnosis of cancer was not associated with poorer outcomes of COVID-19

According to a new study, patients diagnosed with cancer more than a year before COVID-19 and those not receiving active treatment may not be more susceptible to worse outcomes of COVID than those without cancer.

“We found that recent cancer diagnoses were associated with a 17% increased risk of death and a 10% increased risk of hospitalization,” Youngran Kim of UT Health Houston said in a statement. “However, a history of cancer more than a year before the diagnosis of COVID-19 was not significantly associated with increased mortality or hospitalization.”

Using electronic health records, Kim’s team studied 271,639 U.S. adults diagnosed with COVID-19 between June and December 2020, including more than 10,000 diagnosed with cancer last year and approximately 8,000 diagnosed with cancer over a year ago. earlier. . As reported in PLOS One https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0267584, recent cancer diagnoses have been associated with a higher risk of poorer COVID-19 outcomes, especially among humans with metastatic disease or cancer of the blood, liver or lungs. An increased risk of death was also associated with chemotherapy or radiation within three months prior to SARS-CoV-2 infection. The study found other differences among recently diagnosed cancer patients. In particular, those who were older, Black, receiving Medicare, and / or living in the southern United States were significantly more likely to die after SARS-CoV-2 infection.

Researchers warn of the risk of air traffic transmission

Passengers are still at risk of coronavirus infection while traveling on planes as well as at airports, the researchers warned.

Two passengers who flew a 10-hour flight from Dubai to Australia in July 2020 infected 15 other people, despite requests for passenger masks, functional air purifiers and the use of masks, eyeglasses, gloves and protective clothing by the flight crew. according to a report in the Journal of Travel Medicine https://bit.ly/3M0NxIg. Sitting within two rows of the primary case increased the risk of infection more than seven times, and spending more than an hour at the incoming airport increased it nearly five times, the study found. Seven of those infected with the virus sat within 2 rows of “index cases” in the economic section, but the rest sat far away, including some who sat in business class. At the time, all passengers entering Australia had to go through hotel quarantine and give blood samples for tests on COVID-19. The virus particles of two originally infected passengers and 15 newly infected passengers had indistinguishable genomic sequences, the report said.

“Conscientious wearing of a mask while traveling has reduced the risk of infection,” especially for travelers sitting nearby, the researchers said. “With the advent of more portable variants of SARS-CoV-2 … it is crucial to understand and mitigate the potential risk exposure associated with all phases of air travel.”

Click for Reuters graphics https://tmsnrt.rs/3c7R3Bl on vaccines in development.

(Reporting by Nancy Lapid; Editing by Bill Berkrot)

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