Infection
Entry and development of an infectious agent in an organism. She can stay symptomless.
Direct accessExplore the site
An illness, a gesture of prevention or a word found in a newsletter: find useful content, even without JavaScript.
Entry and development of an infectious agent in an organism. She can stay symptomless.
Intestinal L-Athletics is related to worms that may cause blood loss and anaemia. Larvae can penetrate the skin from contaminated soil. Do we have to swallow soil to get infected? No: The penetration of larvae through the skin, especially bare feet, is an important route. Some routes of ingestion also exist depending on the species. Ancylostoma duodenale and Necator americanus
The bacterial category includes respiratory, digestive, vector-borne or wound-related infections. Tuberculosis, listeriosis and tetanus illustrate three different mechanisms. The relevant measures must relate the agent to its context, rather than treating all bacteria as an identical hazard.
"Flore of the organism" indicates a possible mechanism linked to organizations already present. This label is not a transmission between people. In particular, it helps to understand why an opportunistic infection does not read as a systematic external contagion.
Spotted on toxoplasmosis, listeriosis, CMV, rubella, syphilis and Zika during pregnancy, with the steps to discuss with the healthcare team.
Adenoviruses can cause respiratory, digestive or eye infections. The same group of viruses can therefore produce very different tables. Can we still eliminate the virus after the improvement? Yes: CDCs describe prolonged elimination, sometimes without symptoms, especially in immunocompromised people. The disappearance of the signs does not exempt hygiene. Human adenoviruses
Candida auris is an important yeast in the care environment. Disease-free portage and invasive infection are different. Does a positive screening result mean a blood infection? No. A screening sample may reveal a skin port. It justifies care precautions, with a separate interpretation of invasive infection. Candida auris (Candidozyma auris)
Clostridioides can cause diarrhea and inflammation of the colon, especially during or after antibiotic treatment. Can we have a recurrence after treatment? Yes. A new diarrhea must be reported; it may have several causes and requires a reassessment. Clostridioides difficile
Cytomegalovirus, or CMV, often remains silent. Congenital infection and infection in an immunocompetent adult have different issues. Does an old infection rule out any congenital transmission? No. An old infection does not remove all the possibilities of transmission. The results and context must be assessed medically. Human Cytomegalovirus
Shiga-toxin-producing E. coli, or STEC, can cause diarrhoea and hemolytic and uremic syndrome threatening the kidneys. Does any bacterial diarrhea need to be given an antibiotic? No: in STEC infections, CDCs do not recommend antibiotics because of the risk of hemolytic and uremic syndrome. The care must be medically guided. Escherichia coli STEC
The enterovirus D68 mainly causes respiratory infections. It can also be associated with an acute, rare but severe flaccid myelitis. Does a "positive enterovirus" result confirm D68? No: there are many enteroviruses. The D68 type research is distinct from general detection and should be interpreted with the clinical picture. Enterovirus D68
Haemophilus influenzae is a bacterium that can cause respiratory or invasive infections. Despite her name, she's not the flu virus. Does the Hib vaccine cover all Haemophilus influenzae? No, he's targeting type b. Other types and non-typeable strains may cause diseases that are not covered by this vaccination. Haemophilus influenzae
Hantaviruses are carried by rodents. Depending on the virus and region, infection can mainly reach the lungs and heart, or kidneys. Are all hantaviruses transmitted between people? No. WHO describes a limited transmission for Andes virus in South America; it is not documented in the same way for European and Asian hantaviruses. Orthohantavirus spp.
Human metapneumovirus, or HMPV, causes respiratory infections of varying severity. It can touch the upper respiratory tract like the lungs. Does a first infection protect for the whole life? No: Several HMPV infections may occur in life. Preventive measures remain useful after an ancient episode. Human Metapneumovirus
Mycoplasma pneumoniae causes often mild respiratory infections, but sometimes pneumonia or other complications. Does "traffic pneumonia" mean safe? No: this expression sometimes describes a presentation that is not debilitating. It does not rule out worsening or complication, especially in case of shortness of breath. Mycoplasma pneumoniae
Parvovirus B19 often causes mild infection, but pregnancy, certain blood disorders and immunodepression require special attention. Is any infection during pregnancy complicating? No: Complications are not systematic. Exposure or infection deserves an appropriate assessment, without turning a possible risk into certainty. Parvovirus B19
Pneumococcus can cause otitis, sinusitis, pneumonia and invasive infections. These locations have different levels of severity and examinations. Has he had a pneumococcal infection permanently protected him? No: CDC indicates that several episodes are possible. A history of infection does not replace the evaluation of vaccine prevention. Streptococcus pneumoniae
Rotavirus causes gastroenteritis, especially in infants and young children. The main danger is dehydration caused by diarrhea and vomiting. Does vaccination prevent any future infection? No: Reinfections are possible even after vaccination. The protection aims in particular to reduce serious illness; hand hygiene remains complementary. Rotavirus
MRSA is a multi-antibiotic resistant Staphylococcus aureus. Propaganda without symptoms and active infection should be distinguished. Does Resistant mean impossible to treat? No: MRSA is resistant to certain antibiotics, not necessarily everyone. The laboratory and the professional choose the strategy adapted to infection. Staphylococcus aureus resistant to meticillin
Group A streptococcus may cause infections of the throat or skin, but also serious invasive forms and inflammatory complications. Do all complications occur during the initial infection? No: Some conditions, including acute articular rheumatism or glomerulonephritis, may follow an infection with an immune mechanism. A new symptom after the episode deserves a review. Streptococcus pyogenes
Group B streptococci may be part of the digestive or genital portage without disease. Does positive maternal testing mean that the child is ill? No. It reveals a portage and helps to organize prevention around childbirth. Streptococcus agalactiae
Vibrio vulnificus can cause serious infections after consumption of contaminated marine products or contact with a wound with coastal water. Do you have to eat oysters to be exposed? No: A wound in contact with coastal water or raw marine products can also be a gateway. Vibrio vulnificus
HIV reaches the immune system. An HIV infection and the AIDS stage are not synonymous. What does an undetectable viral load mean? Under effective treatment, an undetectable viral load prevents the sexual transmission of HIV. This principle does not replace monitoring and does not protect other sexually transmitted infections. Human immunodeficiency virus
The Nipah virus can be transmitted through animals, contaminated food or close contact between people. It can cause severe respiratory or brain damage. Is a specific medicine or vaccine approved? The WHO fact sheet consulted indicates the absence of an approved medicine or vaccine against Nipah. Candidates are being studied; support care and transmission control remain essential. Henipavirus nipahense
National organizations and profiles have filters by country, area, theme and language in the directory.
Search the directory →