US coronavirus update: Some states have partially reopened


William Bryan, head of science and technology at the Department of Homeland Security speaks during the daily briefing of the coronavirus task force at the White House in Washington, DC on April 23.
William Bryan, head of science and technology at the Department of Homeland Security speaks during the daily briefing of the coronavirus task force at the White House in Washington, DC on April 23. Drew Angerer/Getty Images

The Department of Homeland Security study on the effects of heat and sunlight on the coronavirus is undergoing the process for peer review and publication in scientific journals, according to the department. 

There is no written report as yet, although the results are being submitted for peer review and publication in scientific journals, a DHS spokesperson told CNN. 

DHS’ Science and Technology Directorate has been studying the impacts of environmental conditions on the coronavirus, particularly the impacts of temperature, humidity, and sunlight on the virus.

The study came under increased scrutiny after President Trump suggested last week during a press briefing that the virus could be treated with sunlight, as well as whether disinfectants could be used to treat the virus in humans. 

During last week’s briefing, William Bryan, acting DHS Science and Technology under secretary, discussed the experiments in which, he said, disinfectants like bleach and isopropyl alcohol quickly killed the virus. Trump then mused about whether disinfectants could be used to treat the virus in humans.

When asked why the department released the results before the final study, a spokesperson said, “We felt it important to share information on the emerging trends that are being identified in our tests,” saying that the results are still undergoing a “rigorous scientific review.”



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