What causes bacterial respiratory infection?
A bacterial respiratory tract infection is an infection of the sinuses, throat, airway, or lungs. Bacterial infections may develop after having a viral illness like a cold or the flu. Symptoms tend to localize to one particular area.
How do people get infections in their lungs?
Pneumonia is a common lung infection caused by bacteria, a virus or fungi. It is often spread via coughing, sneezing, touching or even breathing, and those who don’t exhibit symptoms can also spread the illness.
What causes diseases virus or bacteria?
Infectious diseases are disorders caused by organisms — such as bacteria, viruses, fungi or parasites. Many organisms live in and on our bodies. They’re normally harmless or even helpful. But under certain conditions, some organisms may cause disease.
How are respiratory viruses usually transmitted?
Many of the germs that cause respiratory (breathing) diseases are spread by droplets that come from coughing and sneezing. These germs usually spread from person to person when uninfected persons are in close contact with a sick person.
What is incubation period for respiratory virus?
Incubation period: 2 to 14 days. Contagious period: Usually a few days before signs or symptoms appear and while signs and symptoms are present. The presence of green or yellow discharge from the nose is common.
What kind of lung disease is caused by bacteria?
Diphtheria leads to respiratory failures in most of the cases. Person with diphtheria experience the lung inflammation caused by filling up the lungs by small tiny particles of the membranes. Patient may lose his lungs function resulting in lung diseases. Pneumococcal meningitis is also a bacterial lung infection caused by bacteria pneumococcal.
How are bacterial infections of the respiratory tract damaged?
Similar to streptococcal infections of the skin, the mucosal membranes of the pharynx are damaged by the release of a variety of exoenzymes and exotoxins by this extracellular pathogen. Many strains of S. pyogenes can degrade connective tissues by using hyaluronidase, collagenase and streptokinase.
How are bacterial and viral infections related to each other?
Things to remember 1 Many human illnesses are caused by infection with either bacteria or viruses. 2 Most bacterial diseases can be treated with antibiotics, although antibiotic-resistant strains are starting to emerge. 3 Viruses pose a challenge to the body’s immune system because they hide inside cells.
Why do so many people get sick from bacteria?
However, it is trivial compared with the number of people who will suffer some form of illness or other caused by bacteria – though they are not killed by it. Bacterial and other infectious diseases are far more significant in third world countries. A direct result of poverty reducing sanitary practices, medical care and awareness.
What causes the spread of bacterial and viral infections?
Both types of infections are caused by microbes — bacteria and viruses, respectively — and spread by things such as: Coughing and sneezing. Contact with infected people, especially through kissing and sex.
What can cause inflammation in the respiratory system?
Lung cancer can also cause inflammation in the respiratory system. Infectious lung conditions are usually temporary, although some respiratory infections can become chronic or frequently recur. Pneumonia is a lung infection most commonly caused by bacteria or viruses.
Can a bacterial infection be caused by the flu?
A dose of flu vaccine (or two doses a month apart in the young child receiving flu vaccine for the first time) given at the start of each “flu season” can help to prevent influenza infections. In some cases we become more concerned that the infection may be caused by a bacterial infection.
Why are some people more susceptible to respiratory disease?
People with weakened lungs and immune systems are more vulnerable to infectious respiratory conditions . Some individuals have multiple lung conditions. Obstructive lung diseases involve blocked or narrowed airways, making it difficult for the lungs to exhale and exchange old air for fresh air.