Featured in covid variants

N95 respirators
A nurse in a mask and gown writes in a medical chart in front of a patient in a hospital bed.
A doctor in a protective suit taking a nasal swab from a person to test for possible coronavirus infection
Three nicotine plants with flowers in a sunny field.
A plastic plate with differently colored wells, being held up to a light by gloved hands.
the novel coronavirus
A gloved hand holds a vial of COVID vaccine.