Virus dela influenza a y b pdf

Today we talk about the influenza virus, how dangerous is it, how it invades us, its roll as a cause of pneumonia and how we may protect us from it. Weekly epidemiological record releve epidemiologique. Influenza is a highly contagious acute viral infection of the respiratory tract. Puede causar desde una enfermedad leve hasta una grave y en algunos casos puede ser mortal. Influenza diagnosis clinical and epidemiological characteristics increase of febrile respiratory illness lab isolation of influenza virus from clinical specimen e. This limited host range is apparently responsible for the lack of associated influenza pandemics in contrast with those caused by the morphologically similar influenza a virus as both mutate by both antigenic drift and. Department of health and human services centers for disease control and. Sick patients demand medical care and hospitalization. Are people living near modern swine production facilities at increased risk of influenza virus infection. Infection occurs at all ages, but during epidemics the morbidity is higher at extremes of life. Department of health and human services centers for disease control and prevention. Relenza no debe ser usado por ninguna persona con problemas respiratorios, como asma o epoc, por ejemplo.

Influenza b virus is the only species in the genus betainfluenzavirus in the virus family orthomyxoviridae influenza b virus is only known to infect humans and seals. Flu continues to kill more people every year with no apparent decrease in its pathogenicity despite advancement in our understanding of the disease and with the availability of vaccines and antiviral. Influenza a and b are the two types of influenza that cause epidemic seasonal infections nearly every year. Influenza a can be found in many species, including humans, birds, and pigs. Estos medicamentos han estado disponibles desde 1999. There are actually four different types of influenza viruses. Bautista garcia diana olimpia pacheco guendulain francisco javier. Influenzavirus a, influenzavirus b, influenzavirus c, thogotovirus e isavirus. Influenza virus flu caused the worst disease mediated devastation in recorded human history in 1918, when global death was estimated to be between 50 and 100 million people 1. Mar 17, 2016 today we talk about the influenza virus, how dangerous is it, how it invades us, its roll as a cause of pneumonia and how we may protect us from it. Influenza b is believed to be a milder virus compared to some strains of influenza a, such as h3n2, but more potent than the influenza a strains like h1n1 4. This work is licensed under a creative commons attribution.