WHO has published Measles – Brazil. This outbreak appears to be due to migrants from Venezuela. Excerpt:
In Brazil, there is an ongoing measles outbreak. From 1 January through 23 May 2018, there were 995 reported cases (Amazonas State, n=611, and Roraima State n=384). Of these cases, 114 have been laboratory confirmed (30 in Amazonas and 84 in Roraima), including two deaths. Eighty three cases were discarded and 798 remain under investigation.
In Amazonas State, 611 suspected cases were reported from 1 January through 23 May 2018, of which 30 were confirmed, 63 discarded and 518 are under investigation. In Roraima State, 384 suspected cases were reported, of which 84 were confirmed, 20 discarded and 280 are under investigation. Of the 84 confirmed cases, 58 are among Venezuelans (69%), 24 Brazilians (28,6%), one from Guiana (1,2%) and 1 Argentinian (1,2%). Of all confirmed cases, 34 are indigenous. Two measles deaths were among Venezuelans from Boa Vista municipality.
The rash onset dates of the confirmed cases in both States were from 4 February through 2 April, 2018. Oswaldo Cruz Foundation (Fiocruz/RJ) conducted an analysis, where they identified the genotype as D8 for all laboratory confirmed cases, which is identical to the 2017 Venezuela outbreak.
Figure 1 shows the progression of the outbreak with a growing upward trend. It is important to consider that there are pending laboratory results for 798 suspected cases under investigation. An exponential increase of confirmed cases could be observed in the coming weeks.