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High-risk exposure (close contacts) Having had face –to-face contact with a COVID-19 case within 2 meters for more than 15 minutes. Having had physical contact with a COVID-19 case. Having unprotected direct contact with infectious secretions was in a closed environment with a COVID-19 case for > 15 minutes . In an aircraft ,sitting within 2 seats of COVID-19 case. A health care or laboratory worker handling specimens from COVID-19 case, without recommended PPE or breached PPE.