The Chinese city of Dandong recently asked residents to close their windows just in case the wind blows over some coronavirus particles from neighboring North Korea.

Dandong is right next to the China-North Korea border, separated by the Yalu River. After Dandong experienced a recent increase in cases, local officials started issuing stricter lockdown restrictions, including the shutting of windows.

Vice reports COVID-19 has been "raging in North Korea" with "a massive spike in cases." North Korean authorities acknowledged the increase "after two years of denial it had any infections."

Not all health experts are convinced this is a sensible recommendation.

"I've never heard of this happening before, where COVID-19 particles travel such great distances," said Leo Poon, a public health expert at the University of Hong Kong.

"COVID-19 traveling within a large gymnasium, maybe, but for it to cross villages? I don't think so," said Toshikazu Abe, the director of emergency care at Tsukuba Memorial Hospital.

Looks like these guys really understand The Science! 😂

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