Which Stage Of Infection Is Most Severe?

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 is the incubation period of a disease?

The incubation period is the time from exposure to the causative agent until the first symptoms develop and is characteristic for each disease agent.

How are infectious diseases classified?

Known as strictly managed infectious diseases, 26 infectious diseases are classified as Class B infectious diseases, including severe acute respiratory syndrome (SARS), acquired immune deficiency syndrome (AIDS), viral hepatitis, poliomyelitis, highly pathogenic avian influenza, measles, epidemic hemorrhagic fever, …

What stage of infection is most communicable?

In some cases, a person is contagious during the incubation period, while in others the person is not contagious until the illness begins. The amount of time a child remains contagious depends on the infection and the child. Young children are often contagious for longer than older children.

What can I expect from an infectious disease doctor?

The role of an infectious disease specialist is to review a patient’s medical data, including records, X-rays and laboratory reports. They may perform a physical examination, depending on the type of problem. Laboratory studies are often necessary and may include blood studies and cultures of wounds or body fluids.

What is convalescent stage?

Convalescence is the gradual recovery of health and strength after illness or injury. It refers to the later stage of an infectious disease or illness when the patient recovers and returns to previous health, but may continue to be a source of infection to others even if feeling better.

Can viral infections last 3 weeks?

Most viral infections last from several days to 2 weeks. Mononucleosis may last longer. Virus infections can be more serious for older adults.

What is the contagious period called?

Communicability: Period of communicability is the time during which an infectious agent may be transferred directly or indirectly from an infected person to another person, from an infected animal to humans, or from an infected person to animals. Also known as the ‘infectious period’.

Can infection lay dormant in the body?

The bacteria can lie dormant in the body and return, even after treatment. Recurrent infections, or “flares,” typically occur in the same spot as the original infection.

What are the stages of an infection cycle?

The six links include: the infectious agent, reservoir, portal of exit, mode of transmission, portal of entry, and susceptible host. The way to stop germs from spreading is by interrupting this chain at any link.

How serious is viral infection?

Viral Infections Viruses cause familiar infectious diseases such as the common cold, flu and warts. They also cause severe illnesses such as HIV/AIDS, Ebola, and COVID-19. Viruses are like hijackers. They invade living, normal cells and use those cells to multiply and produce other viruses like themselves.

What is the acute stage of infection?

An acute viral infection is characterized by rapid onset of disease, a relatively brief period of symptoms, and resolution within days. It is usually accompanied by early production of infectious virions and elimination of infection by the host immune system.

What is the illness stage?

During the illness stage, symptoms characteristic of a particular disease are recognized. It is also at this stage that the infectious disease is highly communicable. When the patient overcomes the disease, the ensuing stage is the convalescent period. Also called: illness stage.

What are the five stages of infection?

The five periods of disease (sometimes referred to as stages or phases) include the incubation, prodromal, illness, decline, and convalescence periods (Figure 2). The incubation period occurs in an acute disease after the initial entry of the pathogen into the host (patient).

What happens during an infection?

Infection occurs when viruses, bacteria, or other microbes enter your body and begin to multiply. Disease, which typically happens in a small proportion of infected people, occurs when the cells in your body are damaged as a result of infection, and signs and symptoms of an illness appear.

What are the signs of a local infection?

Know the Signs and Symptoms of InfectionFever (this is sometimes the only sign of an infection).Chills and sweats.Change in cough or a new cough.Sore throat or new mouth sore.Shortness of breath.Nasal congestion.Stiff neck.Burning or pain with urination.More items…