New gene tests for germs quickly reveal source of infections

In this March 15, 2019 photo, Brian Jetter poses for a portrait in La Jolla, Calif. In 2018 at 40, he was suddenly battling pneumonia and sepsis, and a slew of tests had failed to find the cause. But a high-tech genetic test was used to search his blood for bits of non-human genetic material from viruses, fungi and the like. It detected unusual bacteria that probably got into the Connecticut man's lungs when he choked and accidentally inhaled bits of a burger weeks earlier.

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