Since epidemiological week (EW) 1 to EW 14 of 2017, Brazil, Colombia, Ecuador, Peru, the Plurinational State of Bolivia, and Suriname have reported suspected and confirmed yellow fever cases.

Since epidemiological week (EW) 1 to EW 11 of 2017, Brazil, Colombia, Ecuador, Peru, the Plurinational State of Bolivia, and Suriname have reported suspected and confirmed yellow fever cases.

From epidemiological week (EW) 1 to EW 26 of 2017, Brazil, Colombia, Ecuador, Peru, the Plurinational State of Bolivia, and Suriname have reported suspected and confirmed yellow fever cases.

Between January 2016 and December 2017, seven countries and territories of the Region of the Americas reported confirmed cases of yellow fever: the Plurinational State of Bolivia, Brazil, Colombia, Ecuador, French Guiana, Peru, and Suriname. The number of human cases and epizootics collectively reported in this period in the Region of the Americas is the highest observed in decades. The observed increase is as much related to an ecosystem favorable to the dissemination of the virus as to the unimmunized populations.

Between January 2016 and December 2017, seven countries and territories of the Region of the Americas reported confirmed cases of yellow fever: the Plurinational State of Bolivia, Brazil, Colombia, Ecuador, French Guiana, Peru, and Suriname. The number of human cases and epizootics collectively reported in this period in the Region of the Americas is the highest observed in decades. The observed increase is as much related to an ecosystem favorable to the dissemination of the virus as to the unimmunized populations.

Situation summary in the Americas

In 2016, up to epidemiological week (EW) 47, three countries reported cases of jungle yellow fever: Brazil, Colombia, and Peru. In addition, since the publication of the Pan American Health Organization / World Health Organization (PAHO/WHO) Yellow Fever Epidemiological Update of 9 November 2016 up to EW 47 of 2016, Brazil confirmed two epizootics in nonhuman primates (NHP) in the state of Sao Paulo, one in the municipality of Severínia and another in Cajobi.

Situation summary in the Americas

Since epidemiological week (EW) 1 to EW 5 of 2017, Brazil, Colombia, Peru, and the Plurinational State of Bolivia, have reported yellow fever cases. Colombia and Peru have reported probable cases, one and three respectively; the Plurinational State of Bolivia reported a case under investigation while Brazil has reported confirmed and suspected cases under investigation.

Between January 2016 and January 2018, seven countries and territories of the Region of the Americas reported confirmed cases of yellow fever: the Plurinational State of Bolivia, Brazil, Colombia, Ecuador, French Guiana, Peru, and Suriname. The number of human cases and epizootics collectively reported in this period in the Region of the Americas is the highest observed in decades.

Since epidemiological week (EW) 1 to EW 9 of 2017, Brazil, Colombia, Ecuador, Peru, the Plurinational State of Bolivia, and Suriname have reported suspected and confirmed yellow fever cases.

Since epidemiological week (EW) 1 to EW 15 of 2017, Brazil, Colombia, Ecuador, Peru, the Plurinational State of Bolivia, and Suriname have reported suspected and confirmed yellow fever cases.

In 2016, Brazil, Colombia, and Peru reported confirmed cases of yellow fever. In 2017, Brazil reported the occurrence of an outbreak in the state of Minas Gerais and epizootics in the neighboring state of Espírito Santo.

From epidemiological week (EW) 1 of 2016 to EW 30 of 2017, Brazil, the Plurinational State of Bolivia, Colombia, Ecuador, Peru, and Suriname have reported suspected and confirmed yellow fever cases.

In 2017, as of 2 February yellow fever cases have been confirmed in Brazil, whereas Colombia and Peru have only reported probable cases.

Since epidemiological week (EW) 1 to EW 7 of 2017, Brazil, Colombia, Peru, and the Plurinational State of Bolivia, have reported suspected and confirmed yellow fever cases.

Since epidemiological week (EW) 1 to EW 17 of 2017, Brazil, Colombia, Ecuador, Peru, the Plurinational State of Bolivia, and Suriname have reported suspected and confirmed yellow fever cases.

Between January 2016 and 13 March 2018, seven countries and territories of the Region of the Americas reported confirmed cases of yellow fever: the Plurinational State of Bolivia, Brazil, Colombia, Ecuador, French Guiana, Peru, and Suriname. The number of human cases and epizootics collectively reported in this period in the Region of the Americas is the highest observed in decades.

In light of the circulation of yellow fever in several areas of the Region, and considering current outbreaks in countries outside of this Region, the Pan American Health Organization / World Health Organization (PAHO/WHO) advises Member States to maintain the capacity to detect and confirm cases of yellow fever, provide updated information for health professionals and train them to enable them to properly detect and manage cases, especially in areas at risk for yellow fever circulation. In addition, Member States are encouraged to maintain high vaccination coverage in at risk populations.

Since epidemiological week (EW) 1 to EW 6 of 2017, Brazil, Colombia, Peru, and the Plurinational State of Bolivia, have reported suspected and confirmed yellow fever cases.

Since epidemiological week (EW) 1 to EW 19 of 2017, Brazil, Colombia, Ecuador, Peru, the Plurinational State of Bolivia, and Suriname have reported suspected and confirmed yellow fever cases.

Since epidemiological week (EW) 1 to EW 16 of 2017, Brazil, Colombia, Ecuador, Peru, the Plurinational State of Bolivia, and Suriname have reported suspected and confirmed yellow fever cases.

Between January 2017 and December 2018, six countries and territories in the Region of the Americas reported confirmed cases of yellow fever: Bolivia, Brazil, Colombia, Ecuador, French Guiana, and Peru. The number of cases reported during this period in the Region of the Americas exceeded the number reported in several decades.

In light of the circulation of yellow fever in several areas of the Region of the Americas, and considering current yellow fever outbreaks in countries outside of this Region, the Pan American Health Organization / World Health Organization (PAHO/WHO) advises Member States to maintain the capacity to detect and confirm cases of yellow fever, provide updated information, and train health professionals for proper detection and case management, especially in areas at risk for yellow fever circulation. In addition, Member States are encouraged to maintain high vaccination coverage in at risk populations.

In 2016, Brazil, Colombia, and Peru reported confirmed cases of yellow fever. In 2017, Brazil reported suspected and confirmed cases of yellow fever, while Peru and Colombia reported probable cases.

In 2015, three countries in the Americas have confirmed yellow fever virus circulation: Bolivia (epizootic), Brazil, and Peru (human cases).

In 2016, as of epidemiological week (EW) 28, three countries have reported jungle yellow fever: Brazil, Colombia, and Peru.

Between epidemiological week (EW) 1 of 2016 and EW 43 of 2017, Brazil, Colombia, Ecuador, French Guiana, Peru, the Plurinational State of Bolivia, and Suriname have reported suspected and confirmed yellow fever cases.

Since epidemiological week (EW) 1 to EW 13 of 2017, Brazil, Colombia, Ecuador, Peru, the Plurinational State of Bolivia, and Suriname have reported suspected and confirmed yellow fever cases.

In light of the circulation of yellow fever in several areas of the Region, and in the context of the ongoing El Niño Southern Oscillation (ENSO) the Pan American Health Organization / World Health Organization (PAHO/WHO) advises Member States to establish and maintain the capacity to detect and confirm cases of yellow fever and keep health professionals up to date to enable them to identify suspected cases and manage cases properly, especially in areas at risk for yellow fever. In addition, Member States are advised to maintain high vaccination coverage in at risk populations.

This update describes the status of the yellow fever outbreaks that have taken place this year in Argentina, Brasil, Colombia, Paraguay, Peru, Trinidad and Tobago, and Venezuela, as well as the response to them and recommendations to be followed to control them.

In 2015, three countries in the Americas have confirmed yellow fever virus circulation: Bolivia (epizootic), Brazil, and Peru (human cases). In 2016, as of epidemiological week (EW) 24, three countries have reported jungle yellow fever: Brazil, Colombia, and Peru.

In 2019, three countries in the Region of the Americas (Bolivia, Brazil, and Peru) have reported confirmed yellow fever cases occurring between December 2018 and February 2019.

Between January 2017 and November 2018, six countries and territories of the Region of the Americas reported confirmed cases of yellow fever: Bolivia, Brazil, Colombia, Ecuador, French Guiana, and Peru. The number of human cases and epizootics reported in the Region of the Americas during this period is the highest in decades.

In 2017, as of 8 February, yellow fever cases have been confirmed in Brazil, whereas Colombia and Peru have only reported probable cases, one and three respectively.

In 2016, Brazil, Colombia, and Peru reported confirmed cases of yellow fever. 

Since epidemiological week (EW) 1 to EW 8 of 2017, Brazil, Colombia, Peru, and the Plurinational State of Bolivia, have reported suspected and confirmed yellow fever cases.

Situation summary in the Americas

In 2015, three countries in the Americas confirmed circulation of yellow fever virus: Bolivia reported epizootic and Brazil and Peru reported human cases. In 2016, as of epidemiological week (EW) 44, three countries had reported jungle yellow fever: Brazil, Colombia, and Peru.

Up to 23 June 2004, the Ministries of Health of Colombia, Peru, Brazil and Bolivia reported to the Pan AmericOrganization (PAHO) the occurrence of 86 confirmed cases of Jungle Yellow Fever (JYF), with 41 death

Up to Epidemiological Week (EW) 29, a total of 109 cases of Jungle Yellow Fever (JYF), with 50 deaths, have been reported to PAHO by Bolivia (4), Brazil (62), Colombia (33), Peru (7) and Venezuela (3).

In 2007 and the beginning of 2008, Brazil reported an intense and extensive epizootic of Jungle Yellow Fever in an area encompassing 6 states (Goiás, the Federal District, Mato Grosso do Sul, Minas Gerais, Tocantins, and São Paulo).

Up to August 26, a total of 181 confirmed Jungle Yellow Fever cases have been reported to the Pan American Health Organization (PAHO), with 75 deaths.

On 5 October 2004, the Ministry of Health and Social Development (MSDS) of Venezuela reported to PAHO three new cases of Jungle Yellow Fever, with two deaths.

During 2003, Colombia reported to PAHO 106 1 cases of Jungle Yellow Fever (JYF), all of which occurred in the Departments of Caquetá (1 case), Casanare (2 cases), Cesar (6), Guaviare (1), Meta (2), Guajira (2) y Norte de Santander (92).

The Ministry of Health (Ministério da Saúde / MS) of Brazil has confirmed 10 cases of human jungle yellow fever (JYF) among the 30 suspected cases associated with the current epizootic among monkeys in the Central-Western part of the the country.

 Up to 6 August 2003, a total of 160 confirmed cases of jungle yellow fever have been reported to the Pan American Health Organization, with 70 deaths.

This PAHO/WHO statement provides results of the investigation of serious adverse events that occurred in October 2007 in Peru following administration of the yellow fever vaccine (substrain 17DD) manufactured by Bio-Manguinhos, Brazil.

 Up to epidemiological week (EW) 28 of 2003, Colombia reported to PAHO 27 cases of jungle yellow fever (JYF), with a case fatality rate of 63%.

Following the two epidemic peaks occurring on the Colombian-Venezuelan border in 2003 during January and July-which affected the states of Zulia, Norte de Santander and César-authorities began to detect in December 2003...