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😷 | [New Corona] 53 new infections in Fujisawa 20 people in their 13s are the most

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[New Corona] 53 new infections in Fujisawa 20 people in their 13s are the most

If you write the contents roughly
All were mild and the transmission route of 43 people was unknown.

Fujisawa City, Kanagawa Prefecture, is confirmed to be infected with 2 men and women under the age of 10 to 70s on the 53nd over the new coronavirus infection. → Continue reading

 Kanaroko by Kanagawa Shimbun

Kanaroko is a news site operated by the Kanagawa Shimbun. As the only local newspaper in Kanagawa Prefecture, we have a news gathering network throughout the prefecture to provide a wealth of information on incidents and accidents, political administration, economics, sports, culture, and heartwarming topics in the region.

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All mild

    Transmission route

    Transmission route(Kansen Keiro,British: route of infection) IsinfectionPresent in the individual or environment that caused thePathogen, Is a route to reach an uninfected individual and cause a new infection. Depending on the pathogen, infection may occur via multiple routes of infection.EpidemicOutbreaks such asNosocomial infection Ofpreventionな どInfection controlAbove isPathogenFind outSource of infectionIt is important to find out, but above all, it cannot be completed unless the infection route is cut off.

    Fine particles (0.5) (μm or less) stays in the air for a long time and continues to be contaminated even after the patient leaves[1].
    Droplet infection
    Wet small particles (0.5) Î¼m or more) stays in the air for a short time.Usually infected by working with the patient.
    Direct infection
    By touching the infected patient directly.Including sexual contact.
    Indirect infection
    By touching contaminated soil.
    Faeces route
    Due to unwashed hands, contaminated plants and water sources.

    Main infection routes

    Below are the infectious diseases in infectionAn exampleIs mentioned, but the infection route isMultipleIt should be noted that there may be cases and there is no one-to-one relationship.


    Splash nuclear infection,Dust infection,Aerosol infectionand so on.English is airborne transmission(Air-mediated propagation), abbreviatedAirborneAlso called.Airborne infections are simply infectiousaerosolPropagate throughFrom the standpoint of being infected[2], In the aerosolLimited to propagation by droplet nuclei(Splash nuclear infection)[3].

    According to the International Epidemiological SocietyEpidemiologyThe dictionary adopts the former definition, which defines that microbial aerosols are transmitted by entering the respiratory tract.Examples include droplet nuclear infection and dust infection.Chemical Society of JapanJapanese standard byChemicalIn the dictionary (2nd edition), aerosol (also translated as aerosol) is a general term for a state in which solid or liquid fine particles are dispersed and suspended in a gas, such as smoke or fog. Solid or liquid in a dispersion medium whose state is gasColloidal particlesDispersedSolIt was named aerosol because it was regarded as a kind of aerosol. "[4]a.

    Droplet nuclear infection is infectiousPathogenDroplet nuclei includingdroplet nuclei: Refers to those that diffuse through the evaporated droplet residue)[1]..These pathogens maintain infectivity in vitro for long periods of time.Moisture evaporates in the air 5MicrometerThe following light particles (droplet nuclei) that still retain their infectivity remain suspended in the air for a long period of time, 3フ ィ ー ト(91Centimeter) Travel longer distances and infect others via the upper and lower respiratory tract[5]..Particles in the air are less than 5 micrometers[6]..This generally requires a high level of isolation.Therefore, a negative pressure environment is required to avoid pollution.

    tuberculosis,Varieg,measles,smallpox,Herpes zoster[Annotation 1]Etc. are airborne (droplet nuclear infection).These are often in the wardNosocomial infectionTo causeInfection controlIs an important disease.influenza,CoronavirusThere is always debate as to whether such infections cause airborne infections (strictly speaking, aerosol infections) or are the main transmission routes.[7].

    Splash infection

    English is droplet transmission(Small drop infection).This is due to respiratory droplets that occur during coughing, sneezing, conversation, etc., and is a common route of infection.Due to the large droplets, they cannot float in the air for long periods of time and are usually scattered at close range.[8]..Splash particles are 5 micrometers or more[6]..Infection by droplets can occur when it adheres to the surface of sensitive mucous membranes such as the eyes, nose, and mouth, or when it touches the face with a hand that touches the contaminated surface.

    Respiratory infectious disease pathogens transmitted by dropletsInfluenza virus,Parainfluenza virus,Adenovirus,Rhinovirus,RS virus,Human metapneumovirus,Pertussis,Pneumococcus,Streptococcus pyogenes,diphtheria,rubella[9],CoronavirusCan be mentioned[10]..Splash diffusion can be reduced by wearing a surgical mask[11].

    If the amount of virus contained in the droplets of an infected person is high, it is observed as if it were an airborne infection (strictly speaking, it corresponds to an aerosol infection).[12].

    Direct infection

    Contact infectionAlso called.English is direct contact(Direct contact).Infection is caused by direct contact between living organisms carrying pathogens.

    It typically refers to skin-to-skin contact, kissing, and sexual intercourse.It also refers to contact with soil and plants containing pathogens.[13].Faeces routeIs mainly regarded as an indirect contact route, but in some cases, it is transmitted by direct contact with feces.[14][15]

    Infectious impetigoSuch as skin diseases.In the medical field, such as MRSADrug resistanceIt is the main route of bacterial transmission.

    Mucosal infection

    Infection occurs when the infected person's blood or body fluid adheres to the mucous membranes of the eyes and nose.Transmission routes can be direct or indirect through vectors.It may be included in the next transdermal infection.

    Epidemic keratoconjunctivitisOphthalmic diseases such as.

    Transcutaneous infection

    Normally, the skin has the ability to prevent the invasion of pathogens, but the pathogens invade the body by being bitten or bitten by mosquitoes, insects, or dogs.Parasites may invade the body directly through the skin.In addition, pathogens invade from areas where the protective function of the skin has been lost due to wounds and burns.Especially theseTranscutaneous infectionMay be called.Needlestick accidents are also included in percutaneous infections.

    scabies,Rabies,Ebola,tetanus,Gas gangreneetc.


    Blood infection(Cross infection) Tomo.Injection ortransfusion,such asMedicalIn addition to actions, bleeding due to trauma touches mucous membranes such as the eyes of others, causing infection of pathogens in the blood.Again, the route of infection can be direct or indirect through a vector.

    Sexually transmitted

    It is a sexual contact infection.There are aspects of mucosal and oral infections.

    syphilis,Toxoplasmosis,Hepatitis B,AIDS,Genital chlamydiaetc.

    Saliva infection

    Especially when pathogens in saliva are transmitted by mouth transfer or deep kiss through saliva.Saliva infectionIt may be said.According to the clinical transmission route classification theory, plaque infection and breath infection are included in oral infection, but saliva infection is not included.Caries fungus,EB virusSaliva infection occurs due to such factors.

    Vertical transmission

    Both mother-to-child transmission and vertical transmission.It is further classified as follows.

    Indirect infection

    Indirect contact infection(Indirect contact transmission, vehicle-borne transmission) is a route transmitted by contact with non-living organisms.Examples include food, water, biological products (blood, etc.), mediators (handkerchiefs, bedding, surgical scalpels), etc.For example, improperly manufactured canned foodsClostridium botulinumbyBotulinum toxinIt provides an environment suitable for production.

    Oral infection

    Especially for infections through food and drink contaminated with pathogensOral infectionMay be called.If the cause of pollution is fecesInfection(Faeces route, See below).In addition, food and drink itself becomes a source of infection and is transmitted orally.BSEThere is.

    Vector infection (horizontal transmission)

    Other animals (especiallyArthropod) Becomes a vector (vector), and the infection is established by transmission. (1) As part of the life cycle of the pathogen, when the vector grows and propagates in the body and is infected from it (biological transmission), (2) the pathogen simply attached to the body surface of the vector is mechanically It may be transmitted (mechanical transmission, mechanical vector infection).

    Faeces route

    InfectionAlso called.It may also be regarded as a type of oral infection (water-borne infection, water-borne epidemic).

    Infection is established by ingestion of food and drink contaminated with feces.

    Enterohemorrhagic Escherichia coli(Such as O157),Staphylococcus,Vibrio parahaemolyticus,Clostridium botulinum,Salmonella,typhoid,Paratyphoid,Bacillary dysentery,cholera,Campylobacter,Listeria,Helicobacter pylori,Amoeba dysentery,Norovirus,Rotavirus,Polio,Hepatitis A,Hepatitis E,Weyl's disease,Keratoconjunctivitisetc.

    Identification of infection route

    When the pathogen can be identified

    Wipe the surfaces of handrails and medical equipment shared by patientscultureHowever, if a pathogen is detected, it is presumed that the object is one of the infection routes. In addition, in the case of bacterial infections,Pulse field gel electrophoresisWhen the closeness of the genotype is examined byHorizontal infectionSince the temporal order of can be estimated, it is not uncommon to find out how the pathogen was first introduced into the population.

    When the pathogen cannot be identified

    EarlySARSIf the pathogen cannot be identified, as described above, the sick and healthy individuals are first isolated, and detailed information is collected on their behavior patterns, life backgrounds, and contact history with others. Among them, factors that correlate with the presence or absence of infectionEpidemiologyInfected routes are estimated by identifying them.

    Example: If multiple people in the same room away from the sick person are affected, it is suspected that a droplet nuclear infection (air infection) occurs.


    [How to use footnotes]

    注 釈

    1. ^ Shingles usually develops in the oral cavity and is limited to the spread as droplets.


    1. ^ a b "Do you misunderstand "airborne infection"?"Nikkei Medical" August 2020, 8.
    2. ^ "Medical dictionary air propagation". April 2021, 1Browse.
    3. ^ "WHO airborne tansmission definition”. WHO. April 2021, 1Browse.
    4. ^ The Chemical Society of Japan, "Japanese Standard Chemistry Dictionary, 2nd Edition" (2nd Edition), Maruzen, 2005.ISBN 4-621-07531-4. 
    5. ^ "Clinical Educators Guide for the Prevention and Control of Infection in Healthcare (PDF)”. As of May 2015, 4originalMore archives.April 2015, 9Browse.
    6. ^ a b "Prevention of hospital-acquired infections (PDF)". World Health Organization (WHO).As of August 2020, 3originalMore archives.April 2020Browse.
    7. ^ "Summary of Evidence on Countermeasures for New Influenza Influenza Transmission Routes". www.virology.med.tohoku.ac.jp. April 2020, 12Browse.
    8. ^ "Clinical Educators Guide for the prevention and control of infection in healthcare (PDF)”. NHMRC, Commonwealth of Australia (2010). As of April 2015, 4originalMore archives.April 2015, 9Browse.
    9. ^ "What is Diseases contagious from droplets?”. As of May 2015, 7originalMore archives.April 2015Browse.
    10. ^ "Pass the message: Five steps to kicking out coronavirus" (English). www.who.int. April 2020, 3Browse.
    11. ^ "Respiratory Protection Against Airborne Infectious Agents for Health Care Workers: Do surgical masks protect workers?”. Canadian Center for Occupational Health and Safety (February 2017, 2). April 2017, 2Browse.
    12. ^ Japan Broadcasting Corporation. “New Corona Delta strain "airborne" ?! What we know now". NHK News. April 2021, 9Browse.
    13. ^ "Principles of Epidemiology: Chain of Infection" (English). US Centers for Disease Control and Infection (September 2019, 2). April 2020, 7Browse.  In this description,The United States of AmericaAt the innerPublic domainIs included.
    14. ^ LaMorte, Wayne W. (January 2016, 1). “Common Vehicle Spread". Boston University School of Public Health. April 2020, 7Browse.
    15. ^ Whittier, Christopher A. (2017-04-16), Bezanson, Michele; MacKinnon, Katherine C; Riley, Erin et al., Eds., “Fecal-Oral Transmission” (English), The International Encyclopedia of Primatology (Hoboken, NJ, USA: John Wiley & Sons, Inc.): pp. 1–1, two:10.1002 / 9781119179313.wbprim0193, ISBN 978-1-119-17931-3, http://doi.wiley.com/10.1002/9781119179313.wbprim0193 April 2020, 7Browse. 


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