Viruses don't "live" , they have to find a host cell to live in and multiply. Also viruses are treated virally while bacteria is treated with antibiotics.
Well generally it will be a positive impact (Of course this generally depends on what the "Physical activity" is, it is generally good, reason being while exercising causes the brain to release endorphin's, as well as helping relax muscles and relieve physical tension, which can greatly help with stress.
He could have had dyspnea because of j
his vision and trouble breathing. A way to protect his airway is by giving him enough oxygen
The five stages are, denial, anger, bargaining, depression and acceptance.
Have a great day! (: