Did you find this answer helpful? Subscribe to keep up with all things Lifelong Learning.
I would feel confident to visit your dad at 30 days from when he first had the Covid infection/symptoms. Some symptoms may linger for a long period of time (i.e., long Covid) but that does not mean that viruses are present. If you have any worries or concerns, you should always feel comfortable to mask up. For example, if you dad is an “energetic” talker and commonly projects micro-spittle while talking loud, then even if it’s not infectious it’s still an “eww” factor. That might be enough for me to say, “okay mask up dad, please!”