Medical microbiology , the large subset of microbiology that is applied to medicine , is a branch of medical science concerned with the prevention, diagnosis and treatment of infectious diseases . In addition, this field of science studies various clinical applications of microbes for the improvement of health. There are four kinds of microorganisms that cause infectious disease: bacteria , fungi , parasites and viruses , and one type of infectious protein called prion .
47-456: European Committee on Antimicrobial Susceptibility Testing (EUCAST) is a scientific committee for defining guidelines to interpret antimicrobial resistance. It was formed in 1997 and is jointly organized by ESCMID , ECDC and other European laboratories. EUCAST guidelines are one of the most popular breakpoint guidelines used in antimicrobial susceptibility testing worldwide. The EUCAST guidelines are freely available to all of their users. Like
94-558: A biannual event, with about 1,500 participants at its inaugural occurrence in 1983. It became an annual event in 2000, and it has grown since then, now attracting over 16,000 participants annually. More than 5,000 scientific abstracts are submitted for inclusion each year by researchers from multiple countries. The most recent ESCMID Global was held in April 2024 in a hybrid format, both online and onsite, in Barcelona, Spain . ESCMID
141-464: A biannual congress, ESCMID Global has been an annual event since 2000. Since its initiation with around 1,500 participants, the congress has grown and now attracts around 14,000 participants every year. The number of submitted abstracts has risen to over 5,000, of which roughly 70% are accepted for oral or poster presentation . A large pharmaceutical exhibition site alongside a broad-based program in clinical microbiology and infectious diseases. In 2024
188-519: A chain of events that can be easily and definitively observed, depending on the test. More complex serological techniques are known as immunoassays . Using a similar basis as described above, immunoassays can detect or measure antigens from either infectious agents or the proteins generated by an infected host in response to the infection. Polymerase chain reaction (PCR) assays are the most commonly used molecular technique to detect and study microbes. As compared to other methods, sequencing and analysis
235-540: A child against smallpox. The same principles are used for developing vaccines today. Following on from this, in 1857 Louis Pasteur also designed vaccines against several diseases such as anthrax , fowl cholera and rabies as well as pasteurization for food preservation . In 1867 Joseph Lister is considered to be the father of antiseptic surgery. By sterilizing the instruments with diluted carbolic acid and using it to clean wounds, post-operative infections were reduced, making surgery safer for patients. In
282-617: A forum for discussion and resolution of professional matters of common interest. The EC elects a president for a two-year term. The current President is Dr. Robert Leo Skov of the Statens Serum Institut in Copenhagen, Denmark . The President-elect and Secretary General is Prof. Jon S. Friedland of St. George’s, University of London in London, United Kingdom . ESCMID currently counts professionals from 133 countries across
329-481: A microbe enters the body is referred to as the portal of entry. These include the respiratory tract , gastrointestinal tract , genitourinary tract , skin , and mucous membranes . The portal of entry for a specific microbe is normally dependent on how it travels from its natural habitat to the host. There are various ways in which disease can be transmitted between individuals. These include: Like other pathogens, viruses use these methods of transmission to enter
376-421: A potential solution to increasing antimicrobial resistance. Bacteriophages , viruses that only infect bacteria, can specifically target the bacteria of interest and inject their genome. This process makes the bacteria halt its own production to make more phages, and this continues until the bacteria lyses itself and releases the phages into the surrounding environment. Phage therapy does not kill microbiota since it
423-489: A specific way, aiding in its identification. Serological methods are highly sensitive, specific and often extremely rapid laboratory tests used to identify different types of microorganisms. The tests are based upon the ability of an antibody to bind specifically to an antigen . The antigen (usually a protein or carbohydrate made by an infectious agent) is bound by the antibody, allowing this type of test to be used for organisms other than bacteria. This binding then sets off
470-399: A stable environment from which the bacteria can disperse and infect other parts of the host. Additionally, the extracellular matrix and dense outer layer of bacterial cells can protect the inner bacteria cells from antimicrobial drugs. Phage therapy is a technique that was discovered before antibiotics, but fell to the wayside as antibiotics became predominate. It is now being considered as
517-412: A thin cross-section of the cell of interest, and it then redirects the electrons onto a fluorescent screen. This method is useful for looking at the inside of cells, and the structures within, especially cell walls and membranes. Scanning electron microscopy reads the electrons that are reflected off the surface of the cells. A 3-dimensional image is then made which shows the size and exterior structure of
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#1732782384984564-586: A treatment can be devised. Other tasks may include the identification of potential health risks to the community or monitoring the evolution of potentially virulent or resistant strains of microbes, educating the community and assisting in the design of health practices. They may also assist in preventing or controlling epidemics and outbreaks of disease. Not all medical microbiologists study microbial pathology ; some study common, non-pathogenic species to determine whether their properties can be used to develop antibiotics or other treatment methods. Epidemiology ,
611-441: A virus in cells of the host are crucial for its survival. For example, some diseases such as measles employ a strategy whereby it must spread to a series of hosts. In these forms of viral infection, the illness is often treated by the body's own immune response , and therefore the virus is required to disperse to new hosts before it is destroyed by immunological resistance or host death. In contrast, some infectious agents such as
658-456: Is a stub . You can help Misplaced Pages by expanding it . ESCMID The European Society of Clinical Microbiology and Infectious Diseases (ESCMID) is a non-profit international organization with headquarters in Basel , Switzerland . An important activity of the society is the organization of the annual scientific congress ESCMID Global (formerly known as ECCMID). The congress began as
705-444: Is a fluid continuum between public health microbiology and clinical microbiology , just as the state of the art in clinical laboratories depends on continual improvements in academic medicine and research laboratories . In 1676, Anton van Leeuwenhoek observed bacteria and other microorganisms, using a single-lens microscope of his own design. In 1796, Edward Jenner developed a method using cowpox to successfully immunize
752-433: Is accessible to full ESCMID and young scientist members, who can receive guidance for research and career development from a senior ESCMID member. The ESCMID Parity Commission was founded to review and improve representation of minorities as well as gender and geographical balance in the society's fields of expertise. The Trainee Association of ESCMID (TAE) aims at widening career opportunities for young scientists at
799-523: Is an increasingly problematic issue that leads to millions of deaths every year. Whilst drug resistance typically involves microbes chemically inactivating an antimicrobial drug or a cell mechanically stopping the uptake of a drug, another form of drug resistance can arise from the formation of biofilms . Some bacteria are able to form biofilms by adhering to surfaces on implanted devices such as catheters and prostheses and creating an extracellular matrix for other cells to adhere to. This provides them with
846-829: Is causing the infectious disease and thus what possible methods of treatment could be used. This technique is the current standard for detecting viral infections such as AIDS and hepatitis . Once an infection has been diagnosed and identified, suitable treatment options must be assessed by the physician and consulting medical microbiologists. Some infections can be dealt with by the body's own immune system , but more serious infections are treated with antimicrobial drugs. Bacterial infections are treated with antibacterials (often called antibiotics) whereas fungal and viral infections are treated with antifungals and antivirals respectively. A broad class of drugs known as antiparasitics are used to treat parasitic diseases . Medical microbiologists often make treatment recommendations to
893-433: Is definitive, reliable, accurate, and fast. Today, quantitative PCR is the primary technique used, as this method provides faster data compared to a standard PCR assay. For instance, traditional PCR techniques require the use of gel electrophoresis to visualize amplified DNA molecules after the reaction has finished. quantitative PCR does not require this, as the detection system uses fluorescence and probes to detect
940-425: Is headquartered in Basel , Switzerland . The main governance organ is the executive committee (EC), which is elected by ESCMID members, and divided further into several subcommittees with specific functions (professional affairs, education, scientific affairs, ECCMID program, publication, international affairs , ethics advisory, guidelines). The Assembly of Members takes place at the annual ECCMID, which serves as
987-533: Is recognized as the largest international forum for presentations and discussions of research in the fields of clinical microbiology and infection for academic, clinical, and industry experts. The first European Congress of Clinical Microbiology (ECCM) was organized in 1983 in Bologna , Italy . After the inclusion of infectious diseases in the late 1980s, the first ECCMID was held in 1991 in Oslo , Norway . Initially
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#17327823849841034-458: Is specific, and it can help those with antibiotic allergies. Some drawbacks are that it is a time-intensive process since the specific bacterium needs to be identified. It also does not currently have the body of research supporting its effects and safety that antibiotics do. Bacteria can also eventually become resistant, through systems like CRISPR/Cas9 system. Many clinical trials have been promising though, showing that it could potentially help with
1081-468: Is the Gram stain . In 1884 Hans Christian Gram developed the method of staining bacteria to make them more visible and differentiated under a microscope. This technique is widely used today. In 1910 Paul Ehrlich tested multiple combinations of arsenic based chemicals on infected rabbits with syphilis . Ehrlich then found that arsphenamine was found effective against syphilis spirochetes. The arsphenamines
1128-522: The Clinical and Laboratory Standards Institute , EUCAST offers guidelines to interpret raw minimum inhibitory concentrations (MICs), the lowest concentration of a chemical, usually a drug, which prevents visible growth of bacterium. The interpretation to antimicrobial resistance (reported as "R") or antimicrobial susceptibility (reported as "S") differs for all bug-drug combinations which is why guidelines are needed. This microbiology -related article
1175-497: The Feline leukemia virus , are able to withstand immune responses and are capable of achieving long-term residence within an individual host, whilst also retaining the ability to spread into successive hosts. Identification of an infectious agent for a minor illness can be as simple as clinical presentation; such as gastrointestinal disease and skin infections. In order to make an educated estimate as to which microbe could be causing
1222-450: The sulfa drug . DNA sequencing , a method developed by Walter Gilbert and Frederick Sanger in 1977, caused a rapid change the development of vaccines , medical treatments and diagnostic methods. Some of these include synthetic insulin which was produced in 1979 using recombinant DNA and the first genetically engineered vaccine was created in 1986 for hepatitis B . In 1995 a team at The Institute for Genomic Research sequenced
1269-527: The DNA molecules as they are being amplified. In addition to this, quantitative PCR also removes the risk of contamination that can occur during standard PCR procedures (carrying over PCR product into subsequent PCRs). Another advantage of using PCR to detect and study microbes is that the DNA sequences of newly discovered infectious microbes or strains can be compared to those already listed in databases, which in turn helps to increase understanding of which organism
1316-452: The antimicrobial resistance problem. It can also be used in conjunction with antibiotics for a cumulative effect. Medical microbiology is not only about diagnosing and treating disease, it also involves the study of beneficial microbes. Microbes have been shown to be helpful in combating infectious disease and promoting health. Treatments can be developed from microbes, as demonstrated by Alexander Fleming's discovery of penicillin as well as
1363-908: The beginning of their careers. Among other professional affairs activities are the cooperation with other organizations in clinical microbiology and infectious diseases; Collaboration with relevant sections of the European Union of Medical Specialists (UEMS); Professional policy issues in the fields of clinical microbiology and infectious diseases; Matters relating to professional training , mobility and recruitment ; Equal opportunities ; Trainees' issues. ESCMID supports young clinicians and researchers as well as established scholars with awards and grants to acknowledge past achievements and provide an incentive for future accomplishments. ESCMID supports its members' research projects and training with around seven hundred thousand euros every year. Medical microbiology A medical microbiologist studies
1410-478: The body, but viruses differ in that they must also enter into the host's actual cells. Once the virus has gained access to the host's cells, the virus' genetic material ( RNA or DNA ) must be introduced to the cell . Replication between viruses is greatly varied and depends on the type of genes involved in them. Most DNA viruses assemble in the nucleus while most RNA viruses develop solely in cytoplasm. The mechanisms for infection, proliferation, and persistence of
1457-465: The cells. Both techniques help give more detailed information about the structure of microbes. This makes it useful in many medical fields, such as diagnostics and biopsies of many body parts, hygiene, and virology. They provide critical information about the structure of pathogens, which allow physicians to treat them with more knowledge. Fast and relatively simple biochemical tests can be used to identify infectious agents. For bacterial identification,
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1504-608: The characteristics of pathogens , their modes of transmission, mechanisms of infection and growth. The academic qualification as a clinical/Medical Microbiologist in a hospital or medical research centre generally requires a Bachelors degree while in some countries a Masters in Microbiology along with Ph.D. in any of the life-sciences (Biochem, Micro, Biotech, Genetics, etc.). Medical microbiologists often serve as consultants for physicians , providing identification of pathogens and suggesting treatment options. Using this information,
1551-616: The disease, epidemiological factors need to be considered; such as the patient's likelihood of exposure to the suspected organism and the presence and prevalence of a microbial strain in a community. Diagnosis of infectious disease is nearly always initiated by consulting the patient's medical history and conducting a physical examination. More detailed identification techniques involve microbial culture , microscopy , biochemical tests and genotyping . Other less common techniques (such as X-rays , CAT scans , PET scans or NMR ) are used to produce images of internal abnormalities resulting from
1598-429: The effectiveness of certain antimicrobial drugs when making recommendations. Additionally, strains of an organism may be resistant to a certain drug or class of drug, even when it is typically effective against the species. These strains, termed resistant strains, present a serious public health concern of growing importance to the medical industry as the spread of antibiotic resistance worsens. Antimicrobial resistance
1645-544: The fields of microbiology , infectious diseases, virology , parasitology , immunology , and epidemiology as related to these fields. ESCMID supports the career development of members by creating a platform for them to connect with experienced professionals in their field. One such activity is the Observership program, which allows infectious diseases specialists and clinical microbiologists to visit renowned centers outside their country. The Mentorship program
1692-595: The first bacterial genome ; Haemophilus influenzae . A few months later, the first eukaryotic genome was completed. This would prove invaluable for diagnostic techniques. In 2007, a team at the Danish food company Danisco, were able to identify the purpose of the CRIPR-Cas systems as adaptive immunity to phages. The system was then quickly found to be able to help in genome editing through its ability to generate double strand breaks. A patient with sickle cell disease
1739-426: The growth of an infectious agent. Microbiological culture is the primary method used for isolating infectious disease for study in the laboratory. Tissue or fluid samples are tested for the presence of a specific pathogen , which is determined by growth in a selective or differential medium . The 3 main types of media used for testing are: Culture techniques will often use a microscopic examination to help in
1786-624: The identification of the microbe. Instruments such as compound light microscopes can be used to assess critical aspects of the organism. This can be performed immediately after the sample is taken from the patient and is used in conjunction with biochemical staining techniques, allowing for resolution of cellular features. Electron microscopes and fluorescence microscopes are also used for observing microbes in greater detail for research. The two main types of electron microscopy are scanning electron microscopy and transmission electron microscopy. Transmission electron microscopy passes electrons through
1833-423: The name of the congress was changed from ECCMID (European Congress of Clinical Microbiology and Infectious Diseases) to ESCMID Global. Clinical Microbiology and Infection (CMI) is the official peer-reviewed ESCMID publication, which publishes monthly issues and additional supplements devoted to special themes. The scope of the journal comprises basic and applied research relevant to therapy and diagnostics in
1880-472: The patient's physician based on the strain of microbe and its antibiotic resistances , the site of infection, the potential toxicity of antimicrobial drugs and any drug allergies the patient has. In addition to drugs being specific to a certain kind of organism (bacteria, fungi, etc.), some drugs are specific to a certain genus or species of organism, and will not work on other organisms. Because of this specificity, medical microbiologists must consider
1927-569: The study of specific areas of clinical microbiology and infectious diseases. The study groups are involved in proposing scientific symposia, educational workshops, and meet-the-expert sessions for ECCMID, proposing educational courses/workshops, and publishing scientific articles in ESCMID's name. During the COVID-19 pandemic , several study groups began producing virtual content, such as web-symposia series or online conferences. ESCMID Global
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1974-509: The study of the patterns, causes, and effects of health and disease conditions in populations, is an important part of medical microbiology, although the clinical aspect of the field primarily focuses on the presence and growth of microbial infections in individuals, their effects on the human body, and the methods of treating those infections. In this respect the entire field, as an applied science, can be conceptually subdivided into academic and clinical sub-specialties, although in reality there
2021-581: The use of metabolic or enzymatic characteristics are common due to their ability to ferment carbohydrates in patterns characteristic of their genus and species . Acids, alcohols and gases are usually detected in these tests when bacteria are grown in selective liquid or solid media , as mentioned above. In order to perform these tests en masse, automated machines are used. These machines perform multiple biochemical tests simultaneously, using cards with several wells containing different dehydrated chemicals. The microbe of interest will react with each chemical in
2068-712: The world among its members. ESCMID also promotes the development and dissemination of clinical and laboratory practice guidelines according to the principles of evidence-based medicine , to harmonize European diagnostic, therapeutic , and infection control procedures. Main operational procedures for guideline development are reported in the ESCMID manual for clinical practice guidelines and other guidance documents . Examples of recently published documents focused on drug treatment and clinical management of COVID-19 , Lyme disease , Sepsis , Clostridioides difficile infection . ESCMID study groups are special interest groups consisting of society members who are involved in
2115-479: The years between 1876 and 1884 Robert Koch provided much insight into infectious diseases. He was one of the first scientists to focus on the isolation of bacteria in pure culture . This gave rise to the germ theory , a certain microorganism being responsible for a certain disease. He developed a series of criteria around this that have become known as the Koch's postulates . A major milestone in medical microbiology
2162-484: Was the first person to be treated for a genetic disorder with CRISPR in July 2019. Bacterial Viral Parasitic Fungal Infections may be caused by bacteria , viruses , fungi , and parasites . The pathogen that causes the disease may be exogenous (acquired from an external source; environmental, animal or other people, e.g. Influenza ) or endogenous (from normal flora e.g. Candidiasis ). The site at which
2209-462: Was then made available in 1910, known as Salvarsan . In 1929 Alexander Fleming developed one of the most commonly used antibiotic substances both at the time and now: penicillin . In 1939 Gerhard Domagk found Prontosil red protected mice from pathogenic streptococci and staphylococci without toxicity. Domagk received the Nobel Prize in physiology, or medicine, for the discovery of
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