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    Digital illustration showing close-up of cholera infection bacteria in small intestine. — Stock Photo
    Digital illustration showing close-up of cholera infection bacteria in small intestine.
    Digital illustration of fungal morphology of filamentous allergenic fungus Alternaria alternata and photograph of fungal colonies on Sabouraud Dextrose Agar. — Stock Photo
    Digital illustration of fungal morphology of filamentous allergenic fungus Alternaria alternata and photograph of fungal colonies on Sabouraud Dextrose Agar.
    Blastomyces dermatitidis fungus, computer illustration. — Stock Photo
    Blastomyces dermatitidis fungus, computer illustration.
    Digital illustration of Norovirus genus of RNA virus, close-up. — Stock Photo
    Digital illustration of Norovirus genus of RNA virus, close-up.
    Illustration of several of the antibiotic resistance mechanisms of bacteria — Stock Photo
    Illustration of several of the antibiotic resistance mechanisms of bacteria
    Trichophyton fungi on white background, digital illustration. — Stock Photo
    Trichophyton fungi on white background, digital illustration.
    Bacterial blood infection, digital illustration. — Stock Photo
    Bacterial blood infection, digital illustration.
    Conceptual image of coxsackievirus cells — Stock Photo
    Conceptual image of coxsackievirus cells
    Protozoan Plasmodium falciparum, causative agent of tropical malaria in red blood cells, digital illustration. — Stock Photo
    Protozoan Plasmodium falciparum, causative agent of tropical malaria in red blood cells, digital illustration.
    Coronavirus particles, computer illustration. Different strains of coronavirus are responsible for diseases such as the common cold, gastroenteritis and SARS (severe acute respiratory syndrome) — Stock Photo
    Coronavirus particles, computer illustration. Different strains of coronavirus are responsible for diseases such as the common cold, gastroenteritis and SARS (severe acute respiratory syndrome)
    3d illustration of cross-section of hepatitis pathogen with DNA, cell nucleus and receptors. — Stock Photo
    3d illustration of cross-section of hepatitis pathogen with DNA, cell nucleus and receptors.
    Bacteriophage t4 virus and red blood cell — Stock Photo
    Bacteriophage t4 virus and red blood cell
    Methicillin-resistant Staphylococcus aureus — Stock Photo
    Methicillin-resistant Staphylococcus aureus
    Illustration of the ultrastructure of the SARS-CoV-2 coronavirus (previously 2019-nCoV) that was first identified in Wuhan, China, in December 2019. It is an enveloped RNA (ribonucleic acid) virus — Stock Photo
    Illustration of the ultrastructure of the SARS-CoV-2 coronavirus (previously 2019-nCoV) that was first identified in Wuhan, China, in December 2019. It is an enveloped RNA (ribonucleic acid) virus
    3d illustration of a Salmonella sp. bacterium showing internal structure — Stock Photo
    3d illustration of a Salmonella sp. bacterium showing internal structure
    Digital illustration of saprophyte green mould conidiophore producing conidia. — Stock Photo
    Digital illustration of saprophyte green mould conidiophore producing conidia.
    Staphylococci bacteria colony — Stock Photo
    Staphylococci bacteria colony
    Trichophyton fungi on white background, digital illustration. — Stock Photo
    Trichophyton fungi on white background, digital illustration.
    Zika virus particles transmitted by mosquito bite, digital illustration. — Stock Photo
    Zika virus particles transmitted by mosquito bite, digital illustration.
    Naegleria brain-eating amoeba forms, digital illustration — Stock Photo
    Naegleria brain-eating amoeba forms, digital illustration
    Close-up of bacterial gonorrhoea infection in female body, digital illustration. — Stock Photo
    Close-up of bacterial gonorrhoea infection in female body, digital illustration.
    Rabies virus, illustration. Rabies virus is a member of the Rhabdoviridae family. This bullet-shaped enveloped virus has a protein coat (capsid, blue), which is made up of helically arranged subunits called capsomeres — Stock Photo
    Rabies virus, illustration. Rabies virus is a member of the Rhabdoviridae family. This bullet-shaped enveloped virus has a protein coat (capsid, blue), which is made up of helically arranged subunits called capsomeres
    Illustration of Tuberculosis bacteria — Stock Photo
    Illustration of Tuberculosis bacteria
    Digital artwork of abstract pathogenic microorganism in human large intestine. — Stock Photo
    Digital artwork of abstract pathogenic microorganism in human large intestine.
    Human papillomavirus particles in the bloodstream — Stock Photo
    Human papillomavirus particles in the bloodstream
    Campylobacter jejuni bacteria — Stock Photo
    Campylobacter jejuni bacteria
    Illustration of fruiting bodies and hyphae of fungus Aspergillus fumigatus. — Stock Photo
    Illustration of fruiting bodies and hyphae of fungus Aspergillus fumigatus.
    Foot and mouth virus, digital illustration. — Stock Photo
    Foot and mouth virus, digital illustration.
    Female reproductive system and Gardnerella vaginalis bacteria attached to vaginal epithelial cells causing bacterial vaginosis, digital illustration. — Stock Photo
    Female reproductive system and Gardnerella vaginalis bacteria attached to vaginal epithelial cells causing bacterial vaginosis, digital illustration.
    Streptococcus pneumoniae bacteria (pneumococci), computer illustration. These Gram-positive spherical bacteria are usually found in pairs. They colonize respiratory tract asymptomatically in healthy carriers, but can cause pneumonia — Stock Photo
    Streptococcus pneumoniae bacteria (pneumococci), computer illustration. These Gram-positive spherical bacteria are usually found in pairs. They colonize respiratory tract asymptomatically in healthy carriers, but can cause pneumonia
    Coronavirus particle, illustration. SARS-CoV-2 is an enveloped RNA (ribonucleic acid) virus. Within the membrane are spike proteins (centre, large red spikes), membrane proteins and envelope proteins. SARS-CoV-2 causes the respiratory infection Covid — Stock Photo
    Coronavirus particle, illustration. SARS-CoV-2 is an enveloped RNA (ribonucleic acid) virus. Within the membrane are spike proteins (centre, large red spikes), membrane proteins and envelope proteins. SARS-CoV-2 causes the respiratory infection Covid
    Retrovirus virion structure and shape — Stock Photo
    Retrovirus virion structure and shape
    Coronavirus particle, computer illustration — Stock Photo
    Coronavirus particle, computer illustration
    Researcher holding a petri dish — Stock Photo
    Researcher holding a petri dish
    Conceptual illustration of piece of cake and magnification of bacterium of food-borne infection on white background. — Stock Photo
    Conceptual illustration of piece of cake and magnification of bacterium of food-borne infection on white background.
    Herpes simplex virus, computer illustration — Stock Photo
    Herpes simplex virus, computer illustration
    Protozoan Plasmodium falciparum, causative agent of tropical malaria in red blood cells, digital illustration. — Stock Photo
    Protozoan Plasmodium falciparum, causative agent of tropical malaria in red blood cells, digital illustration.
    Female reproductive system and Gardnerella vaginalis bacteria attached to vaginal epithelial cells causing bacterial vaginosis, digital illustration. — Stock Photo
    Female reproductive system and Gardnerella vaginalis bacteria attached to vaginal epithelial cells causing bacterial vaginosis, digital illustration.
    Plasmodium malariae protozoa in blood vessel, computer illustration. — Stock Photo
    Plasmodium malariae protozoa in blood vessel, computer illustration.
    Bacterial encephalitis. Conceptual computer illustration showing bacteria infecting brain cells — Stock Photo
    Bacterial encephalitis. Conceptual computer illustration showing bacteria infecting brain cells
    Destruction of human cytomegalovirus — Stock Photo
    Destruction of human cytomegalovirus
    Antibodies attacking coronavirus particle, illustration. — Stock Photo
    Antibodies attacking coronavirus particle, illustration.
    Conceptual illustration of coronavirus particles entering human lungs. — Stock Photo
    Conceptual illustration of coronavirus particles entering human lungs.
    Conceptual image of coxsackievirus cells — Stock Photo
    Conceptual image of coxsackievirus cells
    Flu viruses, computer illustration — Stock Photo
    Flu viruses, computer illustration
    Spherical and rod-shaped bacteria inside biofilm, digital illustration. — Stock Photo
    Spherical and rod-shaped bacteria inside biofilm, digital illustration.
    Hepatitis E virus particles — Stock Photo
    Hepatitis E virus particles
    Blood cells and Plasmodium sp. parasites (at schizont stage) causing malaria, computer illustration. — Stock Photo
    Blood cells and Plasmodium sp. parasites (at schizont stage) causing malaria, computer illustration.
    3d illustration of red-colored virus particles with receptors. — Stock Photo
    3d illustration of red-colored virus particles with receptors.
    Anthrax bacteria, illustration. Anthrax bacteria (Bacillus anthracis) are the cause of the disease anthrax in humans and livestock. They are gram-positive spore producing bacteria arranged in chains (streptobacilli). Many cells have a central spore. — Stock Photo
    Anthrax bacteria, illustration. Anthrax bacteria (Bacillus anthracis) are the cause of the disease anthrax in humans and livestock. They are gram-positive spore producing bacteria arranged in chains (streptobacilli). Many cells have a central spore.
    Plasmodium vivax protozoa and red blood cells, digital illustration. — Stock Photo
    Plasmodium vivax protozoa and red blood cells, digital illustration.
    Digital illustration of fungal morphology of filamentous allergenic fungus Alternaria alternata and photograph of fungal colonies on Sabouraud Dextrose Agar. — Stock Photo
    Digital illustration of fungal morphology of filamentous allergenic fungus Alternaria alternata and photograph of fungal colonies on Sabouraud Dextrose Agar.
    Aspergillus fungus structure — Stock Photo
    Aspergillus fungus structure
    Filamentous dematiaceous allergenic fungus Alternaria alternata, digital illustration. — Stock Photo
    Filamentous dematiaceous allergenic fungus Alternaria alternata, digital illustration.
    Plasmodium ovale protozoan parasites and red blood cell in flow, computer illustration. — Stock Photo
    Plasmodium ovale protozoan parasites and red blood cell in flow, computer illustration.
    Three children sitting in the kitchen painting a rainbow — Stock Photo
    Three children sitting in the kitchen painting a rainbow
    Illustration of an adenovirus particle entering a cell. Adenoviruses are the largest viruses not to have a protein coat covering their capsid — Stock Photo
    Illustration of an adenovirus particle entering a cell. Adenoviruses are the largest viruses not to have a protein coat covering their capsid
    Zika virus particles transmitted by mosquito bite, digital illustration. — Stock Photo
    Zika virus particles transmitted by mosquito bite, digital illustration.
    Smear from oral cavity showing oral trichomonas and buccal epithelial cells, digital illustration. — Stock Photo
    Smear from oral cavity showing oral trichomonas and buccal epithelial cells, digital illustration.
    Neisseria gonorrhoeae bacteria, digital illustration. — Stock Photo
    Neisseria gonorrhoeae bacteria, digital illustration.