antigenic drift
process through which mutations accumulate in a viral genome and lead to antibody avoidance
catarrhal inflammation
condition that occurs when inflamed mucous membranes produce large amounts of mucus that is frequently coughed up and can cause difficulty breathing, in addition to fever, chills, and chest pain
DTaP
combination of vaccines that protects against the diseases diphtheria, tetanus, and pertussis; contains proteins isolated from B. pertussis that stimulate an adaptive immune response
goblet cell
simple columnar epithelial cell that secretes mucus to protect the mucous membrane
histoplasmosis
fungal infection acquired from the droppings of birds and bats in humid areas, which is not serious if confined to the lungs but can be fatal if it spreads throughout the body
influenza
respiratory infection caused by the influenza virus
laryngitis
inflammation of the larynx, or voice box, and can make speaking difficult
Legionnaires' disease
especially dangerous form of pneumonia caused by the gram-negative rod bacteria Legionella pneumophila
lower respiratory tract
part of the respiratory system that is contained entirely within the thorax—the part of the body between the neck and abdomen—and is made up of the lungs, bronchi, bronchioles, and alveoli
mucociliary escalator
barrier preventing infection that lines the lower respiratory tract, where cilia—microscopic hairlike cellular structures—rhythmically beat mucus up toward the throat
otitis
inflammation of the ear that typically presents with pain and is caused by various ear infections
paroxysmal
sudden resurgence of severe symptoms during infection
respiratory system
collection of tissues and organs that allows for gas exchange, primarily by absorbing oxygen and releasing carbon dioxide
rhinitis
inflammation of the mucous membranes in the nose and presents with itchy, watery eyes, sneezing, and sore throat
sinusitis
inflammation of the sinuses, the cavities around the nose, causing facial pain and pressure
strep throat
inflammation of the throat that includes sore throat, fever, pus on the tonsils, and inflamed lymph nodes
tonsillitis
inflammation of the tonsils, lymph nodes at the back of the throat, that is accompanied by throat pain
tuberculosis
long-term respiratory infection caused by Mycobacterium tuberculosis, an airborne bacteria that settles in a person's lungs when they breathe, and symptoms include pain in the chest, a bad cough, and coughing up blood or phlegm
upper respiratory tract
part of the respiratory system that is contained in the head and neck, consisting of the nasal passages, sinus cavities, pharynx, and larynx