Food poisoning is a food borne illness, caused due to microorganisms such as bacteria, viruses and fungi.
The symptoms are similar to intestinal flu. Infants, aged persons, person having compromised immune system and severely ill patients are at a greater risk of suffering from food poisoning.
The microorganisms are present everywhere, in the food, water, air, soil, in the digestive tracts of animals and humans. Food poisoning occurs when a person ingests food and water or any substance which is contaminated by the microorganisms.
Microorganisms which are responsible for food poisoning
- Bacteria: salmonella, clostridium botulinum, shigella, E. coli, staphylococcus etc.
- Viruses: hepatitis A, rotavirus.
- Fungi: microsporidium.
Food Poisoning Cause by Bacteria
Salmonella: disease:-salmonellosis, it is caused when the food is contaminated by the bacteria especially non veg food. Usually it occurs when the food is raw, partially cooked or prepared by a person who is infected.
Symptoms: onset: 6hours to two days after eating the contaminated food.
- Abdomen pain
The symptoms may last for two days to one week.
Clostridium botulinum: the disease is called botulism. It is caused in foods which are improperly canned at home. Food low in acid content. Preserved fish contaminated with the organism.
Symptoms: occurs in an hour after eating to as late as 3 days after eating.
- Double vision.
- Droopy eyes.
- Swallowing, speaking and breathing problem.
- Constant secretion of saliva.
It can be fatal if treatment is not met in time.
Shigella: bacteria: disease:- shigellosis, unhygienic habits in food handlers is the source of infection.
Poultry, salads, milk and milk products etc are the usual source of infection.
Also see Does Shrimp Causes Food Poisoning
Symptoms: onset:- one day to 5 days after eating contaminated food.
- Pain in abdomen.
- Blood and mucus in the stool.
The symptoms last for 5 to 7 days.