Face of a gray-eyed girl, seen very close, while wearing a face mask, with the background out of focus.

Sick blonde girl in pajamas lying down and blanket, while coughing and putting her hands to her face.

Little girl cleaning a wooden surface in a kitchen with detergent spray, a sponge and gloves.

Sick girl sheltered in her bed drinking tea from a cup, while she coughs a little, and puts her hand to her nose.

Woman meditating high up in nature, sitting on top of a large rock, overlooking the horizon, surrounded by hills and vegetation.

Infection in the blood, as a clear envelope peels off and moves the blood inside.

Thick bacterial yellowish gaseous liquid, while its bubbles move slowly and some burst, in a detail shot.

Dentist and patient review dental radiography while the doctor explains the procedure to be performed.

Doctor in her office wearing her dressing gown, while talking on video call on her tablet.

Sick little girl blowing her nose with a handkerchief, on a blanket sofa and with many papers around.

Texture of a resting virus floating in liquid seen under an electron microscope.

Texture of a bacteria floating in blue liquid seen under an electron microscope.