Which of the following statements is false?
◦ Individuals are injected with antibodies in passive immunity.
◦ A genetically engineered virus is not as potentially dangerous as a weakened but intact pathogen.
◦ Allergies occur when the body makes a secondary immune response to a normally harmless substance.
◦ Allergies are a nuisance but are never dangerous or life-threatening.
◦ Allergies cause the secretion of mucus, prostaglandins, and histamines.