« on: 21/02/2011 19:14:55 »
everything which is infectious or disease causing is termed as germ in common language. germs are not classified in animal or plant kingdom. they have there own kingdom like Kingdom Monera which include Algae and bacteria, kingdom Protista which include Protozoa and kingdom fungi which include fungi. out of these three kingdoms, some organisms spread diseases and infections while some do not. like bacteria and virus are considered as germs while some proteins like Prions and cell free Naked DNA are not germs but can cause diseases. fungal spores and some algae can also be infectious.