RESUMEN
In 2016, a total of 18 human infections with influenza A(H3N2) virus occurred after exposure to influenza-infected swine at 7 agricultural fairs. Sixteen of these cases were the result of infection by a reassorted virus with increasing prevalence among US swine containing a hemagglutinin gene from 2010-11 human seasonal H3N2 strains.
Asunto(s)
Subtipo H3N2 del Virus de la Influenza A/clasificación , Gripe Humana/epidemiología , Infecciones por Orthomyxoviridae/epidemiología , Virus Reordenados/clasificación , Enfermedades de los Porcinos/epidemiología , Crianza de Animales Domésticos , Animales , Brotes de Enfermedades , Monitoreo Epidemiológico , Humanos , Subtipo H3N2 del Virus de la Influenza A/genética , Subtipo H3N2 del Virus de la Influenza A/aislamiento & purificación , Gripe Humana/transmisión , Gripe Humana/virología , Michigan/epidemiología , Ohio/epidemiología , Infecciones por Orthomyxoviridae/transmisión , Infecciones por Orthomyxoviridae/virología , Filogenia , Virus Reordenados/genética , Virus Reordenados/aislamiento & purificación , Porcinos , Enfermedades de los Porcinos/transmisión , Enfermedades de los Porcinos/virologíaRESUMEN
On August 3, 2016, the Ohio Department of Health Laboratory reported to CDC that a respiratory specimen collected on July 28 from a male aged 13 years who attended an agricultural fair in Ohio during July 22-29, 2016, and subsequently developed a respiratory illness, tested positive by real-time reverse transcription-polymerase chain reaction (rRT-PCR) for influenza A(H3N2) variant* (H3N2v). The respiratory specimen was collected as part of routine influenza surveillance activities. The next day, CDC was notified of a child aged 9 years who was a swine exhibitor at an agricultural fair in Michigan who became ill on July 29, 2016, and tested positive for H3N2v virus at the Michigan Department of Health and Human Services Laboratory. Investigations by Michigan and Ohio health authorities identified 18 human infections linked to swine exhibits at agricultural fairs. To minimize transmission of influenza viruses from infected swine to visitors, agricultural fair organizers should consider prevention measures such as shortening the time swine are on the fairgrounds, isolating ill swine, maintaining a veterinarian on call, providing handwashing stations, and prohibiting food and beverages in animal barns. Persons at high risk for influenza-associated complications should be discouraged from entering swine barns.
Asunto(s)
Brotes de Enfermedades , Subtipo H3N2 del Virus de la Influenza A/aislamiento & purificación , Gripe Humana/epidemiología , Infecciones por Orthomyxoviridae/veterinaria , Enfermedades de los Porcinos/virología , Adolescente , Agricultura , Animales , Niño , Vivienda para Animales , Humanos , Subtipo H3N2 del Virus de la Influenza A/genética , Gripe Humana/virología , Masculino , Michigan/epidemiología , Ohio/epidemiología , Infecciones por Orthomyxoviridae/virología , PorcinosRESUMEN
In early 2014, five clusters of human Salmonella infections were identified through PulseNet, the national molecular subtyping network for foodborne disease surveillance. Many ill persons in each of these clusters reported contact with live poultry, primarily chicks and ducklings, from a single mail-order hatchery; therefore, the clusters were merged into a single investigation. During February 3-October 14, 2014, a total of 363 persons infected with outbreak strains of Salmonella serotypes Infantis, Newport, and Hadar were reported from 43 states and Puerto Rico, making it the largest live poultry-associated salmonellosis outbreak reported in the United States.
Asunto(s)
Brotes de Enfermedades , Servicios Postales , Aves de Corral/microbiología , Infecciones por Salmonella/epidemiología , Salmonella/aislamiento & purificación , Agricultura , Animales , Niño , Análisis por Conglomerados , Comercio , Humanos , Ohio , Riesgo , Salmonella/clasificación , Infecciones por Salmonella/transmisión , Factores de Tiempo , Estados Unidos/epidemiologíaRESUMEN
In early 2013, four clusters of human Salmonella infections were identified through PulseNet, the national molecular subtyping network for foodborne bacteria. Many of the ill persons in these four clusters reported contact with live poultry, primarily chicks and ducklings, from a single mail-order hatchery; therefore, these investigations were merged. During March 4-October 9, 2013, a total of 158 persons infected with outbreak strains of Salmonella serotypes Infantis, Lille, Newport, and Mbandaka were reported from 30 states.