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Chad: Measles Outbreak - May 2018

Disaster types

Since the start of the year, 400 cases, including 14 deaths, were reported as of 20 May compared to 205 cases and one death over the same period in 2017. Three districts have reached the epidemic threshold. (OCHA, 28 May 2018)

A measles outbreak has been declared on 30 May in five districts of Chad (Bokoro, Gama, Ati, Am dam and Goz Beida), where 474 cases and 18 deaths have been reported. Medecins Sans Frontières is conducting a Measles outbreak investigation field mission in the affected area. Based on the Multiple Indicator Cluster Survey, only one in four children aged 12-23 months (25%) is fully immunised. A stock of 60 000 vaccination doses funded by DG ECHO is available in-country for the local response. (ECHO, 2 Jun 2018)

Health authorities on 8 June declared a measles epidemic after 540 cases and 23 deaths were recorded. The disease has erupted in 89 districts, 10 of which have reached the epidemic level. A US$589,000-response plan by the Government, NGO and UN partners is underway to vaccinate around 572,000 children. Measles is one of the leading causes of death among young children. (OCHA, 19 Jun 2018)

Between week 1 and week 26 (ending 1 July 2018) of 2018, a total of 1284 suspected cases with 49 deaths (CFR 3.8%) have been reported. The cases have been reported from 95 out of 117 health districts in the country. As of 1 July 2018, 90 cases have been laboratory confirmed, 376 confirmed by epidemiological link, and 21 clinically compatible. As of 1 July 2018, 11 districts have had confirmed ongoing measles outbreak, these include: Bokoro, Gama, Amdam, Goz Beida, Haraze Mangueigne, Abeche, Arada, Ati, Mongo, Rig Rig, Tissi and Bardaï. (WHO, 6 Jul 2018)

The measles epidemic declared on 30 May continues to spread affecting 24 districts in the north, east and central parts of Chad. According to the latest data, there have been more than 2 000 suspected cases and 77 deaths. A national response plan is currently being developed. Based on the latest survey, only one in four children aged 12-23 months is fully immunised. A stock of 60 000 vaccination doses funded by DG ECHO is being used for the local response.(ECHO, 29 Aug 2018)

Since week 18, there has been a dramatic increase in the number of measles cases reported. Ninety-eight cases with four deaths were reported in week 31 (week ending 5 August 2018), a reduction in the number of cases compared to the previous week when 162 cases with six deaths were reported. Two districts (Guereda and Massakory) entered the epidemic phase in week 31 bringing the total number of districts in the epidemic to eighteen. The number of cases reported since the peak in week 25 when 175 cases were reported has ranged from 98 to 162 with an average of 118 cases per week. As of week 31, there are 1 889 suspected cases with 72 deaths (CFR 3.8%). A total of 588 cases have been confirmed (IgM-positive -141, Epi-linked-419, and clinically confirmed 28). Children aged 1 to 4 years are the most affected constituting 33% of cases reported. The high case fatality rate in this outbreak is of serious concern.(WHO, 31 Aug 2018)