Don't get too close to them and try to avoid them as much as possible.
A child with chickenpox should avoid aspirin.
The fever for a child with chickenpox will usually last for two to three days.
Swimming with chickenpox could spread the infection to others. A person with chickenpox should stay away from other people until the blisters and sores have scabbed. Swimming with open lesions may also cause a small risk of secondary infection if you swim in water that includes microbes.
Stay at home unless the infected people live there. In which case leave home.
If someone is in contact with someone with chickenpox they can EASILY catch the virus...so yes you can catch it even if the person doesn't have it YET it takes three days until you get sympthoms but you still have they virus and yes you are contagious I recomend you stay away
Most people with a history of chickenpox will be safe if exposed to chickenpox. Certain conditions can make reinfection more likely. "Low immunity" is not a medical diagnosis, and you should contact your health care provider for advice specific to your particular medical condition.
You just stay away from that person
The only way rabies can be spread is if a animal infected bites or scratches you. If u think an animal is infected stay away an call for help.
If you have the chickenpox, you should stay home until you are no longer contagious; that is, until all blisters and sores have scabbed.
Anyone who may be infected would be on quarantine to prevent anyone from catching that disease. Anyone who was in contact of a sick person will be on isolation, even if he/she hasn't caught the disease in case she/he maybe carrying the disease. Try to stay away from sick people and stay away from people who was in contact with that person.
Be with that person.
Your best bet is to wash your hands, avoid contacting your face, and stay away from infected individuals.