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NEW YORK (GenomeWeb) – An international team of researchers has homed in on a variant linked to increased obesity among people of African descent.

While lifestyle and culture affect people's risk of developing obesity, it is also thought to be highly heritable, with some estimates placing its heritability at 60 percent. The prevalence of obesity isn't constant across populations — in the US, African Americans have the highest rates of obesity.

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Nature News reports that genomics is being applied to trace and try to prevent additional COVID-19 waves.

Rady's Children Hospital and San Diego County are teaming up to test pediatric patients and their families for COVID-19 to gauge the spread of the virus locally, according to the San Diego Union-Tribune.

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In Science this week: Genetic Probability tool identifies likely diagnoses in 45 percent of inflammatory arthritis cases, and more.