Province in China will investigate all those who purchased cough medicine or fever-reducing medicine (e.g. Tylenol) for possibly having coronavirus.

From Google Translation of this page:

V. All pharmacies who purchase antipyretic and cough medicines (including western medicine and proprietary Chinese medicines) must check and register the identity information of the drug users, and the drug users must provide original valid identity certificates such as resident identity cards or medical insurance cards; The personnel shall present the original valid identity certificate such as the resident ID card or medical insurance card of the drug user, and register the information of the purchaser, and report to the control headquarters under their control daily.

6. Purchase of antipyretic and cough medicines (including western medicines and proprietary Chinese medicines) through online purchase must be registered in real names. Each delivery company will check and register the identity information of the people who deliver the medicines, and will report to the control headquarters under its control daily.

Source: Google Translate

China has a large, government run surveillance system including facial recognition. Any one who bought cough or fever-reducing medication since January 20th will be investigated by the government. They are conducting “house to house” searches for people who may be ill.

Just in case you wondered what all of our surveillance data might be used for …