Typically, clinical diagnosis begins with the onset of fever and malaise about 10 days after exposure to the<unk>  virus, followed by the emergence of cough, coryza, and conjunctivitis that worsen in severity over 4 days of appearing. Observation of Koplik's spots is also diagnostic. Other possible condition that can result in these symptoms include parvovirus, dengue fever, Kawasaki disease, and scarlet fever. Laboratory confirmation is however strongly recommended. Laboratory testing Laboratory diagnosis of<unk>  can be done with confirmation of positive<unk>  IgM antibodies or detection of<unk>  virus RNA from throat, nasal or urine specimen by using the reverse transcription polymerase chain reaction assay. This method is particularly useful to confirm cases when the IgM antibodies results are inconclusive. For people unable to have their blood drawn, saliva can be collected for salivary<unk> -specific IgA testing. Salivary tests used to diagnose<unk>  involve collecting a saliva sample and testing for the presence of<unk>  antibodies. This method is not ideal, as saliva contains many other fluids and proteins which may make it difficult to collect samples and detect<unk>  antibodies. Saliva also contains 800 times fewer antibodies than blood samples do, which makes salivary testing additionally difficult. Positive contact with other people known to have<unk>  adds evidence to the diagnosis.
Measles
Zika fever
Mumps
Roseola
Ebola
Trichinosis
Smallpox
Scabies