NOTE: Recipients of Janssen COVID-19 vaccine should be instructed to seek immediate medical attention if they develop shortness of breath, chest pain, leg pain or swelling, persistent abdominal pain, neurological symptoms (including severe or persistent headaches or blurred vision), nausea, vomiting, petechiae or easy bleeding beyond the site of vaccination within 4 to 30 days of receipt of Janssen 疫苗。大多数患有血液凝块和低血小板的人是18至49岁的女性注意:根据疫苗类型,第二剂COVID-19-COVID-19疫苗应在初次疫苗后21或28天内到期。请参阅您的COVID-19疫苗接种记录卡以获取第二剂量到期日。以获取更多信息,请在21天内与您的PCP或ADH本地健康部门联系。保留您的Covid-19疫苗接种记录卡,以获取记录的初始疫苗日期证明。