Which of the following statements about measles is incorrect?
1) Dry cough, sore throat, fever, and conjunctivitis are symptoms.
2) Humans are the only reservoir for the pathogen.
3) It may involve a fatal complication called subacute sclerosing panencephalitis (SSPE).
4) Secondary bacterial otitis media and sinusitis can occur.
5) It is transmitted by direct contact with the rash.