concerns are growing about a second wave outbreak of coronavirus infections. citizens must be prepared for risk in cases that might come after the relaxation of lockdown. masks are protective item.

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2019-ncov 2nd wave abstract alert arrow background beware blue caution concept corona coronavirus covid-19 covid19 crisis danger dangerous disease emergency epidemic flu graph health health care illness infection influenza lockdown mask medical medicine new normal outbreak pandemic peak protection protective quarantine respiratory risk safety second wave sign social distancing spreading symbol threat up virus warning
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