Intestinal infections: symptoms, diagnosis, course and prevention
What are intestinal infections and why are they dangerous?
Intestinal infections are a group of diseases that occur as a result of the entry of pathogenic microorganisms into the body that affect the gastrointestinal tract. Most often, pathogens are transmitted through food, water, dirty hands, or contact with a sick person.
According to WHO, more than 1.7 billion cases are registered each year diarrheal diseases in the world. Particularly vulnerable are children under 5 years old, pregnant women and the elderly, in whom dehydration can develop rapidly due to infection.
The main pathogens of intestinal infections
| Type of pathogen | Examples |
|---|---|
| Bacteria | Salmonella, Shigella, Campylobacter, E. coli |
| Viruses | Rotavirus, norovirus, astrovirus, adenovirus |
| Vermin | Giardia, cryptosporidia, amoebas |
| Mushrooms | Candida (in severe cases or after antibiotics) |
Different pathogens cause similar symptoms but may require completely different treatment approaches.
Typical symptoms of intestinal infections
sudden onset of illness
nausea, vomiting
frequent loose stool (up to 10 times a day)
stomach ache, bloating, cramps
fever
dehydration (especially in children): dry lips, decreased urination, lethargy
headache, chills
As gastroenterologist Iryna Savchuk notes:
«"Most patients come in too late because they 'hope it will go away on its own.' But even a banal rotavirus without timely rehydration can cause serious complications in a child or elderly person."“
Intestinal infections in children and pregnant women
In children under 5 years of age, infections occur faster and more aggressively due to:
immature immune system
less fluid in the body
increased sensitivity to toxins
Pregnant women have additional risks:
increased uterine tone, which can lead to premature birth
metabolic disorder and the risk of gestosis
intoxication, which affects the fetus
Diagnosis of intestinal infections: modern methods
| Research method | Informativeness |
|---|---|
| General stool analysis | Inflammatory signs, mucus, red blood cells |
| Bacteriological culture | Determination of antibiotic sensitivity |
| PCR diagnostics (express) | Rapid detection of viruses and bacteria |
| Toxin analysis (CDT, Clostridium) | In complicated cases after antibiotic therapy |
| Parasite analysis | For the detection of Giardia, helminth eggs, amoebas |
Treatment of intestinal infections
Treatment should be milestone and is prescribed depending on the pathogen:
1. Rehydration (most important):
pharmacy powders (Regidron, Hydrovit)
homemade solutions (0.5 tsp salt + 6 tsp sugar per liter of water)
drinking small sips every 10–15 minutes
2. Sorbents:
Smecta, enterosgel, activated charcoal
Removes toxins and normalizes stool
3. Probiotics:
Bifidumbacterin, Linex, Enterol
Restores microflora after infection
4. Antibiotics (as indicated):
In bacterial forms (dysentery, salmonellosis)
Not recommended for viral infections
5. Diet:
easily digestible food (rice, bananas, crackers, jelly)
exclude dairy, fatty, spicy foods, fresh vegetables during the acute period
Prevention of intestinal infections: what to remember
Daily actions that reduce risk:
always wash your hands after being outside, before eating, and after using the toilet
boil or filter water
store raw and cooked meat separately
do not buy food at random markets
boil milk if it is not pasteurized
do not take food with you "in the heat" without a refrigerator
process vegetables and fruits with boiled water
vaccinate children against rotavirus
Intestinal infections are not just «stomach upset,» but a potentially serious condition that requires attention. The sooner the pathogen is identified and treatment is started, the lower the risk of complications. And the best defense is in prevention, which starts with hand washing and ends with proper nutrition and awareness.
Director of Medi Lab Plus LLC, a doctor of the highest category. Has over 45 years of practical experience in medicine and laboratory diagnostics. Founder and head of the laboratory since 2007. More details…