⁍ Fresh jump in cases in parts of Europe, the United States and Asia.

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⁍ Sparked fears of a second wave of new coronavirus infections.

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⁍ Some countries have imposed new restrictions on travel.

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– “We’ve said this before and we’ll say it again: young people are not invincible,” Tedros Adhanom Ghebreyesus, director-general of the World Health Organization, said at a news briefing in Geneva Thursday, per Reuters. He said evidence suggests recent spikes in cases in some countries are being “driven in part by younger people letting down their guard during the northern hemisphere summer.” A top WHO epidemiologist, however, told the same briefing that nightclubs are “amplifiers of transmission” and that “the majority of young people infected tend to have more mild disease. But that’s not always consistent.” In Spain, the leader of the northeastern Spanish region of Catalonia on Monday warned young people to stop partying to help halt a surge in new cases or local authorities may have to reimpose harsh restrictions. Britain and several other European countries have placed restrictions on travel to Spain. The WHO this month urged travelers to wear masks on planes and keep themselves informed as COVID-19 cases surge again in some countries. The WHO had said in June that it would update its travel guidelines ahead of the northern hemisphere summer holidays, but has not yet done so. Its previous guidance for travelers has included common-sense advice applicable to other settings such as social distancing, washing hands, and avoiding touching your eyes, nose, or mouth.