Tuberculosis
It is documented worldwide. It is infectious, so I would say yes.
Hepatitis B remains the most important infectious work hazard among all occupational infecious hazards. But I'm not quite sure if it's the biggest threat to Healthcare Workers as well.
Infectious disease.
Anything that is potentially infectious is a biohazard ie. blood, body fluids, micro organisms, Lyme disease etc.
non infectious
a doctor who helps people with infectious diseases.(see infectious disease)
Pellagra is not an infectious disease. Pellagra is a nutritional deficiency disease.
an infectious disease is a disease caused by bacterial, viral, fungal, or protozoan infection.
Piles (A Swollen Hemorrhoid) is not a infectious disease.
infectious disease
Chemical spills are not an infectious disease.
What happens in our body when we have an infectious disease