1 Don't relax your vigilance and pay attention to your health.
2 Keep a healthy lifestyle by having enough sleep and doing more exercises.
3 Don't go out for meals as much as possible. Eat more vegetables and drink plenty of water.
4 Maintain your health by washing hands regularly and keep the windows open to ensure fresh air.
5 Get a physical examination regularly and consult a doctor if you don't feel well.
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