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    Mature man sneezing into handkerchief. — Stock Photo
    Mature man sneezing into handkerchief.
    Blue colored dust mite, digital illustration. — Stock Photo
    Blue colored dust mite, digital illustration.
    Tired, stressed businesswoman rubbing eyes in office — Stock Photo
    Tired, stressed businesswoman rubbing eyes in office
    Cropped shot of woman holding inhaler device. — Stock Photo
    Cropped shot of woman holding inhaler device.
    Low angle side view of a mixed race woman with long dark hair out and about in the city streets during the day, wearing a face mask against air pollution and coronavirus, standing and using a smartphone with buildings in the background. — Stock Photo
    Low angle side view of a mixed race woman with long dark hair out and about in the city streets during the day, wearing a face mask against air pollution and coronavirus, standing and using a smartphone with buildings in the background.
    Front view of a mixed race woman with dark hair out and about in the city streets during the day, wearing a face mask against air pollution and coronavirus, walking with her bicycle with buildings in the background. — Stock Photo
    Front view of a mixed race woman with dark hair out and about in the city streets during the day, wearing a face mask against air pollution and coronavirus, walking with her bicycle with buildings in the background.
    Mast cell releasing histamine during allergic response, digital illustration. — Stock Photo
    Mast cell releasing histamine during allergic response, digital illustration.
    Young woman using inhaler outdoors. — Stock Photo
    Young woman using inhaler outdoors.
    Toxic mould spores of Stachybotrys chartarum fungus, digital illustration. — Stock Photo
    Toxic mould spores of Stachybotrys chartarum fungus, digital illustration.
    Female doctor measuring with calipers allergic reaction during skin prick test. — Stock Photo
    Female doctor measuring with calipers allergic reaction during skin prick test.
    Senior woman using inhaler. — Stock Photo
    Senior woman using inhaler.
    Businesswoman with allergies sneezing into tissue at computer in office — Stock Photo
    Businesswoman with allergies sneezing into tissue at computer in office
    Businesswoman with allergies sneezing into tissue in office — Stock Photo
    Businesswoman with allergies sneezing into tissue in office
    Stachybotrys fungus on black background, digital illustration. — Stock Photo
    Stachybotrys fungus on black background, digital illustration.
    Senior Caucasian man wearing casual clothes, out and about in the city streets during the day, covering his face while coughing. — Stock Photo
    Senior Caucasian man wearing casual clothes, out and about in the city streets during the day, covering his face while coughing.
    Senior Caucasian man out and about in the city streets during the day, wearing a face mask against coronavirus, covid 19, covering his face while coughing. — Stock Photo
    Senior Caucasian man out and about in the city streets during the day, wearing a face mask against coronavirus, covid 19, covering his face while coughing.
    Senior Caucasian man out and about in the city streets during the day, wearing a face mask against coronavirus, covid 19.putting on face mask against air pollution and coronavirus. — Stock Photo
    Senior Caucasian man out and about in the city streets during the day, wearing a face mask against coronavirus, covid 19.putting on face mask against air pollution and coronavirus.
    Asthma spacer against white background. — Stock Photo
    Asthma spacer against white background.
    Senior Caucasian man out and about in the city streets during the day, putting on a face mask against coronavirus, covid 19 — Stock Photo
    Senior Caucasian man out and about in the city streets during the day, putting on a face mask against coronavirus, covid 19
    Siblings wearing medical masks to protect from corona virus — Stock Photo
    Siblings wearing medical masks to protect from corona virus
    Woman blowing nose on tissue outdoors. — Stock Photo
    Woman blowing nose on tissue outdoors.
    Composite image of nasal epithelium and pollen. Coloured Scanning Electron Micrograph (SEM) of the surface of nasal epithelium with inhaled in pollen. — Stock Photo
    Composite image of nasal epithelium and pollen. Coloured Scanning Electron Micrograph (SEM) of the surface of nasal epithelium with inhaled in pollen.
    Stachybotrys toxic mould fruiting structure with spores, digital illustration. — Stock Photo
    Stachybotrys toxic mould fruiting structure with spores, digital illustration.
    Digital illustration of eosinophil white blood cells with lobed nuclei colored in purple. — Stock Photo
    Digital illustration of eosinophil white blood cells with lobed nuclei colored in purple.
    Blond boy, about 8 years old, wearing a respirator to co-infect himself with a virus — Stock Photo
    Blond boy, about 8 years old, wearing a respirator to co-infect himself with a virus
    Colored digital illustration of parasitic dust mites. — Stock Photo
    Colored digital illustration of parasitic dust mites.
    Illustration of eosinophil white blood cell with purple lobed nuclei. — Stock Photo
    Illustration of eosinophil white blood cell with purple lobed nuclei.
    Hands of doctor performing allergy skin prick test on little boy arm. — Stock Photo
    Hands of doctor performing allergy skin prick test on little boy arm.
    Microscopic dust mites colony — Stock Photo
    Microscopic dust mites colony
    Illustration of eosinophil white blood cell with purple lobed nuclei. — Stock Photo
    Illustration of eosinophil white blood cell with purple lobed nuclei.
    Cropped shot of woman holding inhaler device. — Stock Photo
    Cropped shot of woman holding inhaler device.
    Pink colored digital illustration of parasitic dust mites. — Stock Photo
    Pink colored digital illustration of parasitic dust mites.
    Dust mite parasite, microscopic digital illustration. — Stock Photo
    Dust mite parasite, microscopic digital illustration.
    Stachybotrys toxic mould fruiting structure with spores, digital illustration. — Stock Photo
    Stachybotrys toxic mould fruiting structure with spores, digital illustration.
    Microscopic dust mites colony — Stock Photo
    Microscopic dust mites colony
    Woman using inhaler — Stock Photo
    Woman using inhaler
    Senior Caucasian man out and about in the city streets during the day, wearing a face mask against coronavirus, covid 19 and using a smartphone. — Stock Photo
    Senior Caucasian man out and about in the city streets during the day, wearing a face mask against coronavirus, covid 19 and using a smartphone.
    Asthma inhaler against white background. — Stock Photo
    Asthma inhaler against white background.
    Portrait of a senior Caucasian man out and about in the city streets during the day, wearing a face mask against coronavirus, covid 19. — Stock Photo
    Portrait of a senior Caucasian man out and about in the city streets during the day, wearing a face mask against coronavirus, covid 19.
    Female doctor performing allergy skin prick test on little boy with mother in immunologist office. — Stock Photo
    Female doctor performing allergy skin prick test on little boy with mother in immunologist office.
    Female immunologist wiping boy arm after skin prick allergy testing. — Stock Photo
    Female immunologist wiping boy arm after skin prick allergy testing.
    Front low angle view of a Caucasian couple out and about in the city, going down in underground station with an escalator, wearing face masks against air pollution and covid19 coronavirus. — Stock Photo
    Front low angle view of a Caucasian couple out and about in the city, going down in underground station with an escalator, wearing face masks against air pollution and covid19 coronavirus.
    Filamentous dematiaceous allergenic fungus Alternaria alternata, digital illustration. — Stock Photo
    Filamentous dematiaceous allergenic fungus Alternaria alternata, digital illustration.
    Sick boy getting inhalation treatment in clinic — Stock Photo
    Sick boy getting inhalation treatment in clinic
    Asthma nebulizer against white background. — Stock Photo
    Asthma nebulizer against white background.