Precautions you can take include avoiding contact with surfaces that might be contaminated, keeping your hands away from your face and washing your hands frequently. Always good rules anyway, but especially important now.
Another strategy is to keep your immune system healthy, by getting moderate regular exercise, eating more vegetables and fruits (note the order), getting plenty of rest and avoiding stress.
When stressed, do you become upset; crying or angry? Do you "hold" stress in your shoulders or back muscles? Do you get "tension" headaches? Almost everyone's immune system is weakened
by stress, causing us to be susceptible to getting sick.
Your body puts all stress, emotional stress, chemical stress and physical stress on the same pile. Even good stress such as a wedding or buying a house will go into the same "stress" bucket. Your body can adapt to a certain amount of stress, but once you reach a certain threshold, the stress will show in whatever areas you are most weak.