Bacteria: Very small cells, Produce toxins that damage cells, a type of pathogen, Are not always harmful, salmonella, Gonorrhoea, can be treated with antibiotics, can be treated with a vaccine, Tuberculosis, Virus: not a cell, but very small, reproduce rapidly inside cells causing cell damage, another type of pathogen, are always harmful, HIV, Tobacco Mosaic Virus, Measles, Covid-19, can also be treated with a vaccine,

Pathogen and Virus - differences

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