Salmonellosis: as transmitted, incubationperiod of salmonella infection

Update: October 2018

Salmonellosis is a common intestinal infection, the main
the source of infection of which are contaminated food.
The causative agent of salmonellosis is the various bacteria of the genus Salmonella. AT
Our country has almost 500 species, the most common among
which S. typhimurium, S. Heidelberg, S. enteritidis, S. derby, S.
newport, S. Anatum,  S. cholerae suis и пр., восприимчивость к
which the person is not the same. Minimum dose for infection
human is from 1.5 million to 1.5 billion microbial cells.
Usually, after suffering salmonellosis, it remains stable.
immunity, however, repeated illnesses occur when they
caused by other types of Salmonella bacteria.

Salmonella is very stable and can persist for a long time.
external environment:

  • in reservoirs – 120 days сальмонеллез как передается
  • in soil up to 1, 5 years
  • indoors in dust – up to 500 days
  • в морской воде —  200 дней

AT продуктах питания:

  • in milk – 20 days
  • in sausage products – 2-4 months
  • in kefir – 2 months
  • in frozen meat – from six months to a year
  • in butter – 120 days
  • in beer – 2 months
  • in cheeses – almost a year.

Meat and dairy products can not only save
salmonella, but in them it reproduces successfully, with no external
the appearance or taste of the food does not change. AT этом состоит коварство
salmonellosis. How is this intestinal bacterium transmitted?

  • One of the most common ways to infect salmonella
    are – eggs, dairy and meat products
  • Neither smoking nor salting kill salmonella
  • Freezing only prolongs survival.
    these microorganisms in products
  • Only heat treatment can destroy it, at 60
    degrees salmonella dies in an hour, and 80 degrees kill her in 3
  • ATсе дезинфекционные растворы, даже в обычных концентрациях,
    Salmonella microbes are quickly killed.

Salmonellosis – incubation period

Usually, when bacteria enter the body, the disease begins
прогрессировать в течение 6-72 часов. That is,
Salmonella incubation period lasts from several hours
up to three days. With timely treatment, recovery occurs
in 6-10 days. Clinically, salmonellosis can occur either
very bright, or the symptoms of poisoning may be absent altogether.
Even with no signs of salmonellosis, a person becomes
bacteria carrier, that is, it may not be sick, but be a source
contamination for other people.

Ways of Salmonella Infection

After a person is infected, salmonella starts quickly.
to multiply, the body secretes toxins, the action of which
lead to disruption of the nervous system and fluid loss through
intestines. Therefore, a strong infection occurs in an infected person.
intoxication, which is expressed by: diarrhea, fever,
weakness, vomiting, headache. There are several ways
Salmonella infection:


Infection through food

Infection with salmonellosis is possible through almost all products.
power supply. In order for a disease to occur, a massive one must occur.
infection, and the causative agent of salmonellosis multiplies better and faster
in protein foods. Moreover, the share of meat products among
all cases of infection is about 70 percent. Then go
dairy products, fish and egg products. Herbal Products
food does not often cause disease, since reproduction in them
bacteria practically does not occur. During heat treatment
the amount of salmonella is sharply reduced, so the use of
hot or warm food is absolutely safe. Even if small
the number of bacteria is still preserved, they are not enough to
developed salmonellosis. With long-term storage quantity
the causative agent of salmonellosis increases and, accordingly, the risk
Salmonella infection is also increasing.

Infection with salmonellosis through a household contact

What to do if a family member or close friend struck
salmonellosis? How is infection transmitted from person to person? 
Infection with salmonellosis in contact with patients occurs in the same way
as with other intestinal infections. The bacilli carrier can excrete
salmonella only through feces.

Therefore, salmonellosis is transmitted from person to person very
Rarely, this only happens on contact, if not respected.
rules of personal hygiene, simply through dirty hands.  To that
in this case, a massive lesion is unlikely and will become ill
only particularly susceptible people. Especially prone to infection
people weakened by other diseases, young children, elderly
population for which the causative agent of salmonellosis is even in small
quantity is dangerous. Contact infections arise usually in
hospitals in premature and weak children.

Infection through water

If contaminated people and excreta get into water
sick animals and waterborne Salmonella infection. But
reproduction and accumulation of the causative agent does not occur in the aquatic
environment, respectively, and the number of bacteria in the water is small. Such
infection routes salmonellosis is very rare.

ATоздушно-капельным путем

ATоздушно-капельным путем кишечные инфекции, в том числе
salmonella, not transmitted.

ATоздушно-пылевым путем

It is believed that when spraying excrement of pigeons living
on the roofs of buildings, salmonella may get into the room. AT
wards of hospitals with young children in the air are sometimes found
salmonella. This is possible in cases where there are rooms
ventilation problems.

Автор: Мельникова Светлана Георгиевна врач-дерматолог

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