Strain - A genetic variant or specific subtype of a microorganism, such as a virus or bacteria.⏎
Vector - An organism (usually an arthropod such as a flea, mosquito, or tick) that carries an infectious agent from one host to another.⏎
Universal Flu Vaccine - A vaccine that is effective against all forms of the influenza virus.⏎
Skin Lesion - Any abnormal tissue on the skin caused by injury or disease.⏎
Symptom - A subjective indication of the presence of disease or a departure from the body’s normal state of functioning.⏎