How does infectious disease differ from other types of disease such as genetic disease cardiovascular disease auto immune disease etc?
Infectious disease can be passed from person to person. AIDS is both infectious and an auto-immune disease.
genetic diseases are associated with birth via the DNA chain (as is cystic fibrosis) ; infectious diseases are those types of pathologies like malaria, for instance, which is transported by a specific mosquito which implants the malaria germ into your blood stream. it is more complicated then that when some diseases are fundamentally genetic but are associated with many infectious traits.
False. Prions and viroids are the smallest infectious agents. Prions are infectious protein particles, and viroids are infectious strands of RNA. Viroids differ from viruses in that they are ONLY a strand of RNA. Viruses have a protein coat protecting the nucleic acid molecule and some even have a lipid layer over that.