My simplistic humble opinion: think live virus meets mucus membrane - those naturally moist external body bits - mouth, nose, eyes, *******ia and any open cut or sore.
Once it has entered your body, your immune system decides how you are affected. A positive test for someone asymptomatic probably indicates a very healthy immune system.
The immune system of someone in poor health or elderly is already taxed and less able to fight, therefore higher death rates.
Major factors in good immune health are low stress, adequate sleep, exercise and regular, healthy meals.
Once it has entered your body, your immune system decides how you are affected. A positive test for someone asymptomatic probably indicates a very healthy immune system.
The immune system of someone in poor health or elderly is already taxed and less able to fight, therefore higher death rates.
Major factors in good immune health are low stress, adequate sleep, exercise and regular, healthy meals.