What are the 4 stages of infection?

  • Key Points. The first phase is characterized by complete lack or very few symptoms. ...
  • Key Terms. ...
  • Stages of Disease. ...
  • STAGE 1: INCUBATION PERIOD. ...
  • STAGE 2: PRODROMAL PERIOD. ...
  • STAGE 3: ACUTE PERIOD. ...
  • STAGE 4: CONVALESCENCE PERIOD.


What are four stages of infection?

The natural history of an untreated communicable disease has four stages: stage of exposure, stage of infection, stage of infectious disease, and stage of outcome.

What are the stages of infection?

There are five stages of infection:
  • incubation.
  • prodromal.
  • illness.
  • decline.
  • convalescence.


What are the four main types of infections?

Infections are common. From ear infections and the flu to COVID-19, chances are we all have had at least one at some point. Viral, bacterial, fungal, and parasitic infections can all trigger sepsis.

What is the most serious bacterial infection?

The most deadly bacterial disease contracted by human beings is mycobacterium tuberculosis, the world's leading infectious disease with more than 1,700,000 deaths per year. As much as 13% of cases are resistant to most antibiotics, and about 6% are resistant or unresponsive to essentially all treatment.


Stages of Infection | NURSING LECTURE



What is the most common infection?

Most Common Infectious Diseases in the U.S.
  • Chlamydia. 1/15. This sexually transmitted disease affects men and women. ...
  • Influenza A and B. 2/15. Sudden fever and chills, muscle aches, headache, tiredness, sore throat, congestion. ...
  • Staph. 3/15. ...
  • E. Coli. ...
  • Herpes Simplex 1. 5/15. ...
  • Herpes Simplex 2. 6/15. ...
  • Shigellosis. 7/15. ...
  • Syphilis. 8/15.


How long can an infection last?

Viral infections can vary a lot in how long they last, for instance: Respiratory infections can last a few days to two weeks. A wart on your skin can last for a year or longer. Hepatitis B and C can cause chronic infections that last for years.

How long do infections usually last?

Bacterial Infections

Symptoms persist longer than the expected 10-14 days a virus tends to last. Fever is higher than one might typically expect from a virus. Fever gets worse a few days into the illness rather than improving.


How do you know when an infection is serious?

Seek immediate medical attention if you experience any of the following:
  1. shortness of breath.
  2. fast heart rate.
  3. fever.
  4. being in severe pain or discomfort.
  5. chills or sweating.
  6. confusion.


What is the first step in infection?

The first step in infection is for the pathogen to colonize the host. Most parts of the human body are well-protected from the environment by a thick and fairly tough covering of skin.

What are the 3 phase infection?

The different phases in infections include: Infective period. Communicability period. Incubation period.


What are 4 ways to break the chain of infection?

Break the chain by cleaning your hands frequently, staying up to date on your vaccines (including the flu shot), covering coughs and sneezes and staying home when sick, following the rules for standard and contact isolation, using personal protective equipment the right way, cleaning and disinfecting the environment, ...

When should you go to the ER for an infection?

“If there is fever, rapidly spreading redness, rapid heart rate, or extraordinary pain that is disproportionate to the wound or injury, that is when you tell the patient to visit the hospital,” he said.

How do I know if an infection is spreading?

Signs the infection has spread include:
  • a high temperature (fever) of 38C (100.4F) or above.
  • a fast heartbeat or fast breathing.
  • being sick.
  • diarrhoea.
  • feeling dizzy or faint.
  • confusion or disorientation.
  • cold, clammy, pale skin.
  • unresponsiveness or loss of consciousness.


How do you know if infection spread to bloodstream?

Sepsis Diagnosis

Signs of infection on an X-ray, CT scan, or ultrasound. A high or low white blood cell count. A low number of platelets in your blood. Low blood pressure.

What makes an infection go away?

Most bacterial infections can be effectively treated with antibiotics. They either kill bacteria or stop them multiplying. This helps the body's immune system to fight the bacteria. Your doctor's choice of antibiotic will depend on the bacteria that is causing the infection.

How do I know if my infection is getting worse?

Signs of an infected wound include:
  1. Excessive redness and swelling.
  2. Continued bleeding.
  3. Slow or no signs of healing.
  4. Pain that doesn't subside.
  5. Warm or hot skin that doesn't abate after a day or two.
  6. Discharge from the wound (especially yellow or green)
  7. Foul odor.


How do you get over infection fast?

But you can find relief faster with these smart moves.
  1. Take it easy. When you're sick, your body works hard to fight off that infection. ...
  2. Go to bed. Curling up on the couch helps, but don't stay up late watching TV. ...
  3. Drink up. Getting plenty of fluids thins your mucus and breaks up congestion.


What does a severe infection feel like?

a high temperature (fever) or low body temperature. a change in mental state – like confusion or disorientation. slurred speech. cold, clammy and pale or mottled skin.

Will an infection eventually go away?

If your health care provider diagnoses a bacterial infection, they can determine whether you need an antibiotic. “Some bacterial infections get better on their own, but that's rare,” Dr. Price said. Most of the time, your doctor will prescribe an antibiotic.


How long does it take for your body to get rid of a bacterial infection?

A typical antibiotic course is 5 days long, and usually the infection subsides completely by the end of those 5 days. However, if the infection is severe, the course maybe of 10 days, thereby doubling the recovery period as well.

What infections are hard to treat?

There are several common antibiotic-resistant pathogens.
  • Methicillin-Resistant Staphylococcus Aureus. Staphylococcus aureus is a pathogen commonly found on the skin or in the nose of healthy people. ...
  • Streptococcus Pneumoniae. ...
  • Carbapenem-Resistant Enterobacteriaceae.


What is the biggest cause of infection?

Person to person. Infectious diseases commonly spread through the direct transfer of bacteria, viruses or other germs from one person to another. This can happen when an individual with the bacterium or virus touches, kisses, or coughs or sneezes on someone who isn't infected.


Where is the most common place to get an infection?

The most common places are:
  • the mouth and throat.
  • the skin.
  • the lungs.
  • the kidneys and bladder, especially if you have a catheter to drain urine from your bladder.
  • where a drip or central line goes in (cannula sites and PICC line sites)
  • wounds and where wound drains go in.
  • ulcerating tumours.
  • the bloostream.


What are the early warning signs of sepsis?

The signs and symptoms of sepsis can include a combination of any of the following:
  • confusion or disorientation,
  • shortness of breath,
  • high heart rate,
  • fever, or shivering, or feeling very cold,
  • extreme pain or discomfort, and.
  • clammy or sweaty skin.