Most common cause is bacterial, viral, or parasitic infection. Food poisoning lasts less than two days, triggered by contaminated food. Traveler's diarrhea lasts less than one week, from contaminated food/water. Stomach flu lasts three to eight days, caused by viruses
Pneumonia is a lung infection causing fluid or pus buildup in air sacs. Most common in children under 2 and adults over 50. Can affect one or both lungs and be asymptomatic
Bocavirus is a small (20 nm) non-enveloped DNA virus discovered in 2005. Three strains exist: HBoV-1, HBoV-2, and HBoV-3. Usually found in hospitalized infants and children with respiratory symptoms
Pneumonia is lung infection causing fluid or pus buildup in air sacs. Can range from mild to severe depending on cause and patient factors
DNA was first isolated by Friedrich Miescher in 1869 from white blood cells. Scientists initially believed proteins were better candidates for heredity
Meningitis is inflammation of protective membranes covering brain and spinal cord. Main symptoms include fever, intense headache, vomiting and neck stiffness. Young children may show only irritability and poor feeding. Classic triad includes neck stiffness, sudden high fever and altered mental status