SmallpoxSmallpox was an infectious disease caused by variola virus (often called smallpox virus) which belongs to the genus Orthopoxvirus. The last naturally occurring case was diagnosed in October 1977, and the World Health Organization (WHO) certified the global eradication of the disease in 1980, making smallpox the only human disease to be eradicated. The initial symptoms of the disease included fever and vomiting. This was followed by formation of ulcers in the mouth and a skin rash.
Japanese encephalitisJapanese encephalitis (JE) is an infection of the brain caused by the Japanese encephalitis virus (JEV). While most infections result in little or no symptoms, occasional inflammation of the brain occurs. In these cases, symptoms may include headache, vomiting, fever, confusion and seizures. This occurs about 5 to 15 days after infection. JEV is generally spread by mosquitoes, specifically those of the Culex type. Pigs and wild birds serve as a reservoir for the virus. The disease occurs mostly outside of cities.
Demographics of BrazilBrazil had an official resident population of 203 million in 2022, according to IBGE. Brazil is the seventh most populous country in the world, and the second most populous in the Americas and Western Hemisphere. Brazilians are mainly concentrated in the eastern part of the country, which comprises the Southeast, South, and Northeast. But it also has a significant presence in large cities in the Center-West and North. According to the 2020 Census, Brazil had 104,472,254 White people, 93,807,378 Mixed people, 15,235,537 Black people, 3,264,758 Asian people, and 870,603 Indigenous people.
Agriculture in BrazilThe agriculture of Brazil is historically one of the principal bases of Brazil's economy. While its initial focus was on sugarcane, Brazil eventually became the world's largest exporter of coffee, soybeans, beef, and crop-based ethanol. The success of agriculture during the Estado Novo (New State), with Getúlio Vargas, led to the expression, "Brazil, breadbasket of the world". As of 2009, Brazil had about of undeveloped fertile land – a territory larger than the combined area of France and Spain.
Lymphatic filariasisLymphatic filariasis is a human disease caused by parasitic worms known as filarial worms. Usually acquired in childhood, it is a leading cause of permanent disability worldwide. While most cases have no symptoms, some people develop a syndrome called elephantiasis, which is marked by severe swelling in the arms, legs, breasts, or genitals. The skin may become thicker as well, and the condition may become painful. Affected people are often unable to work and are often shunned or rejected by others because of their disfigurement and disability.
