Open forum infectious diseases · 2023
Nationwide Measles and Rubella Outbreaks in South Sudan, 2019.
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Peck Megan E, Maleghemi Sylvester, Kayembe Lidia, Hercules Margaret, Anyuon Atem, Bunga Sudhir, McFarland Jeff, Olu Olushayo
Аннотация
BACKGROUND: South Sudan confirmed a measles outbreak in December 2018. An investigation was conducted to assess underlying causes of the outbreak.
METHODS: Vaccination coverage and measles surveillance data were analyzed. A suspected measles case had fever, maculopapular rash, and cough or conjunctivitis. A confirmed measles case had generalized maculopapular rash lasting >3 days, a temperature >38°C, and cough or conjunctivitis; or serologic confirmation (anti-measles immunoglobin M [IgM] antibody detection) in serum samples collected ≤30 days from rash onset. A confirmed rubella case tested measles IgM-negative and rubella IgM-positive.
RESULTS: Nationwide, 3727 suspected measles cases were reported in 2019. Seventy-five percent of all suspected measles cases were in children aged <5 years. Thirty-six percent of patients with suspected measles were admitted to the hospital, and 36 measles-related deaths were reported. Among cases, 922 (25%) were tested for measles; of these, 317 (34%) were measles IgM-positive. Among cases that tested measles IgM-negative, 149 (33%) were rubella IgM-positive. Immunization coverage for 1 dose of measles-containing vaccine (MCV) varied by state, ranging from 6% to 67%.
CONCLUSIONS: Measles and rubella remain public health problems in South Sudan. To reduce measles incidence, South Sudan needs to achieve >95% coverage with 2 doses of MCV.
METHODS: Vaccination coverage and measles surveillance data were analyzed. A suspected measles case had fever, maculopapular rash, and cough or conjunctivitis. A confirmed measles case had generalized maculopapular rash lasting >3 days, a temperature >38°C, and cough or conjunctivitis; or serologic confirmation (anti-measles immunoglobin M [IgM] antibody detection) in serum samples collected ≤30 days from rash onset. A confirmed rubella case tested measles IgM-negative and rubella IgM-positive.
RESULTS: Nationwide, 3727 suspected measles cases were reported in 2019. Seventy-five percent of all suspected measles cases were in children aged <5 years. Thirty-six percent of patients with suspected measles were admitted to the hospital, and 36 measles-related deaths were reported. Among cases, 922 (25%) were tested for measles; of these, 317 (34%) were measles IgM-positive. Among cases that tested measles IgM-negative, 149 (33%) were rubella IgM-positive. Immunization coverage for 1 dose of measles-containing vaccine (MCV) varied by state, ranging from 6% to 67%.
CONCLUSIONS: Measles and rubella remain public health problems in South Sudan. To reduce measles incidence, South Sudan needs to achieve >95% coverage with 2 doses of MCV.