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    Senior Caucasian man, wearing a face mask against coronavirus, covid 19,, using an escalator in a metro station, talking on his smartphone, and pulling a suitcase. — Stock Photo
    Senior Caucasian man, wearing a face mask against coronavirus, covid 19,, using an escalator in a metro station, talking on his smartphone, and pulling a suitcase.
    Filamentous dematiaceous allergenic fungus Alternaria alternata, digital illustration. — Stock Photo
    Filamentous dematiaceous allergenic fungus Alternaria alternata, digital illustration.
    Businesswoman with allergies sneezing into tissue at computer in office — Stock Photo
    Businesswoman with allergies sneezing into tissue at computer in office
    Front 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 with a hand to her mouth with buildings in the background. — Stock Photo
    Front 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 with a hand to her mouth with buildings in the background.
    Filamentous dematiaceous allergenic fungus Alternaria alternata, digital illustration. — Stock Photo
    Filamentous dematiaceous allergenic fungus Alternaria alternata, digital illustration.
    Microscopic Dust mites on floor — Stock Photo
    Microscopic Dust mites on floor
    Dust mite parasite, microscopic digital illustration. — Stock Photo
    Dust mite parasite, microscopic digital illustration.
    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
    Senior Caucasian man out and about in the city streets during the day, wearing a face mask against coronavirus, covid 19 and showing 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 showing a smartphone.
    Woman using inhaler — Stock Photo
    Woman using inhaler
    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.
    African American girl social distancing at home during quarantine lockdown, wearing a stripped t-shirt, using her inhaler, in a garden on a sunny day. — Stock Photo
    African American girl social distancing at home during quarantine lockdown, wearing a stripped t-shirt, using her inhaler, in a garden on a sunny day.
    Illustration of fruiting bodies and hyphae of fungus Aspergillus fumigatus. — Stock Photo
    Illustration of fruiting bodies and hyphae of fungus Aspergillus fumigatus.
    Dust mite parasite, microscopic digital illustration. — Stock Photo
    Dust mite parasite, microscopic digital illustration.
    Dust mite parasite, microscopic digital illustration. — Stock Photo
    Dust mite parasite, microscopic digital illustration.
    Asian mature woman blowing nose. — Stock Photo
    Asian mature woman blowing nose.
    Stachybotrys toxic mould fruiting structure with spores, digital illustration. — Stock Photo
    Stachybotrys toxic mould fruiting structure with spores, digital illustration.
    Dust mite parasite, microscopic digital illustration. — Stock Photo
    Dust mite parasite, microscopic digital illustration.
    Toxic mould spores of Stachybotrys chartarum fungus, digital illustration. — Stock Photo
    Toxic mould spores of Stachybotrys chartarum fungus, digital illustration.
    Various allergenic food in bowls, still life. — Stock Photo
    Various allergenic food in bowls, still life.
    Young woman using inhaler outdoors. — Stock Photo
    Young woman using inhaler outdoors.
    Preschooler boy using inhaler mask with help of female nurse. — Stock Photo
    Preschooler boy using inhaler mask with help of female nurse.
    Filamentous dematiaceous allergenic fungus Alternaria alternata, digital illustration. — Stock Photo
    Filamentous dematiaceous allergenic fungus Alternaria alternata, digital illustration.
    Close-up of equipment for allergy patch test. — Stock Photo
    Close-up of equipment for allergy patch test.
    Sick boy getting inhalation treatment in clinic — Stock Photo
    Sick boy getting inhalation treatment in clinic
    Close-up of syringes for allergy patch test. — Stock Photo
    Close-up of syringes for allergy patch test.
    Patient undergoing a skin prick test in allergy clinic. — Stock Photo
    Patient undergoing a skin prick test in allergy clinic.
    Colored digital illustration of parasitic dust mites. — Stock Photo
    Colored digital illustration of parasitic dust mites.
    Dust mite parasite, microscopic digital illustration. — Stock Photo
    Dust mite parasite, microscopic digital illustration.
    Colored digital illustration of parasitic dust mites. — Stock Photo
    Colored digital illustration of parasitic dust mites.
    Wheat grains and corn in containers with laboratory equipment for food research. — Stock Photo
    Wheat grains and corn in containers with laboratory equipment for food research.
    Woman scratching itchy back, rear view. — Stock Photo
    Woman scratching itchy back, rear view.
    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
    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 in a city street with buildings in the background. — Stock Photo
    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 in a city street with buildings in the background.
    Asian grandmother checking for signs of rash on granddaughter arm. — Stock Photo
    Asian grandmother checking for signs of rash on granddaughter arm.
    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
    Asthma inhaler against white background. — Stock Photo
    Asthma inhaler against white background.
    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.
    Mature woman blowing nose on tissue. — Stock Photo
    Mature woman blowing nose on tissue.
    Panoramic illustration of blood vessel with eosinophilia with numerous eosinophils white blood cells, anti-parasite immune system. — Stock Photo
    Panoramic illustration of blood vessel with eosinophilia with numerous eosinophils white blood cells, anti-parasite immune system.
    Filamentous dematiaceous allergenic fungus Alternaria alternata, digital illustration. — Stock Photo
    Filamentous dematiaceous allergenic fungus Alternaria alternata, digital illustration.
    Rice and corn in containers with laboratory equipment for food research. — Stock Photo
    Rice and corn in containers with laboratory equipment for food research.
    Dust mite parasite, microscopic digital illustration. — Stock Photo
    Dust mite parasite, microscopic digital illustration.
    Senior Caucasian man out and about in the city streets during the day, wearing a face mask against coronavirus, covid 19, riding his bicycle. — Stock Photo
    Senior Caucasian man out and about in the city streets during the day, wearing a face mask against coronavirus, covid 19, riding his bicycle.
    Doctor treats children's hands with an antiseptic — Stock Photo
    Doctor treats children's hands with an antiseptic