Influenza tipo b pdf

Influenza a e b estao associados com a influenza sazonal e com muitos surtos e epidemias. Ja a influenza b, ou gripe b, e a gripe causada pelo virus influenza do tipo b, ou cepa b. Influenza a viruses are the only influenza viruses known to cause flu pandemics, i. Department of health and human services centers for disease control and prevention. Infec tion occurs at all ages, but during epidemics the morbidity is higher at extremes of life. Infections of the blood, joints, bones, and covering of the heart. Human influenza a and b viruses cause seasonal epidemics of disease known as the flu season almost every winter in the united states.

Mar 26, 2018 influenza commonly known as the flu is a respiratory infection caused by flu viruses. Infection occurs at all ages, but during epidemics the morbidity is higher at extremes of life. Influenza commonly known as the flu is a respiratory infection caused by flu viruses. O virus influenza a foi isolado em 1933 por wilson smith e seus colaboradores christopher andrews e patrick laidlaw. Haemophilus influenzae type b hib haemophilus influenza type b hib is a bacteria responsible for severe pneumonia, meningitis and other invasive diseases almost exclusively in children aged less than 5 years. Influenza c e relativamente rara e usualmente nao causa surtos ou.

Influenza a and b are the two types of influenza that cause epidemic seasonal infections nearly every year. Nov 18, 2019 there are four types of influenza viruses. Pdf influenza is a highly contagious acute viral infection of the respiratory tract. Influenza a can be found in many species, including humans, birds, and pigs. Influenza b virus is only known to infect humans and seals with influenza. It is transmitted through the respiratory tract from infected to susceptible individuals. Haemophilus influenzae type b hib disease is a bacterial infection which can cause pneumonia. Sick patients demand medical care and hospitalization, consuming limited resources, increasing. A historia da influenza e os dados epidemiologicos sobre sua morbimortalidade mostram sua importancia ao longo dos seculos. Influenza is a highly contagious acute viral infection of the res piratory tract. O virus da influenza d foi detectado no gado e em suinos. Influenza is a highly contagious acute viral infection of the respiratory tract. Severe swelling in the throat, making it hard to breathe. This limited host range is apparently responsible for the lack of associated influenza pandemics in contrast with those caused by the morphologically similar.