The younger Cuenco said that his father experienced "mild fever and incessant coughing" on June 18 which prompted them to conduct a swab test and later showed on June 20 that the elder Cuenco was positive from the said virus.
The younger Cuenco's account of his father's symptoms (fever and coughing) led to a swab test being conducted, which subsequently revealed the elder Cuenco's positive status for the virus in question.