Ibrahim, S.A.

measles sample virus paper study blood patient fi lter paper month vaccination antibody khartoum rt-pcr measles cases diagnosis level infection assay sequence elisa laboratory sudan result disease infant mv-speci analysis laboratory diagnosis serum \khartoum firmed number health measles patients measles virus vaccine detection filter mubarak non-measle ibrahim 24 months genotype signal table mv-speci fic antibodies strain reconstituted cohort plate plasma speci osterhau health volume 7 el mubarak 5 pp 442–449 firmed measles cases coverage mutation dilution sudanese complication isolation vaccinated osterhaus adme igm detection mv infection 25 ␮ l surveillance children immunization blood spots throat symptom combination filter paper mv isolation non-measles cases storage journal