نتایج جستجو برای: yellow fever
تعداد نتایج: 127797 فیلتر نتایج به سال:
Brazil has reported 921 suspected cases of yellow fever since December, the highest number in decades, prompting concerns of a major resurgence of this old enemy as health authorities see signs of a slow start to Brazil’s second Zika season. Yellow fever is a mosquito-borne flavivirus—a cousin to dengue, Zika, and West Nile virus. Once the scourge of the British Empire, it also devastated Napol...
OBJECTIVES To assess the seroresponses to yellow fever vaccination at 6 and 9 months of age; assess any possible adverse effects of immunization with the 17D yellow fever vaccine in infants, particularly at 6 months of age. METHODS Four hundred and twenty infants who had completed BCG, OPV and DPT immunizations were randomized to receive yellow fever immunization at either 6 or 9 months. A si...
BACKGROUND Substantial outbreaks of yellow fever in Angola and Brazil in the past 2 years, combined with global shortages in vaccine stockpiles, highlight a pressing need to assess present control strategies. The aims of this study were to estimate global yellow fever vaccination coverage from 1970 through to 2016 at high spatial resolution and to calculate the number of individuals still requi...
WHILE THE TWENTIETH CENTURY HAS PRODUCED GREAT DEVELOPMENTS IN THE EPIDEMIOLOGY OF YELLOW FEVER AND IN TECHNIQUES FOR ITS CONTROL IN URBAN AREAS, THE ESSENTIAL METHOD OF CONTROL HAS NOT CHANGED: it is still the elimination of the urban vector, Aëdes aegypti. The aim of those responsible for yellow fever control in Africa should be the eradication of this vector from all urban communities in the...
On March 16, 2018, this report was posted as an MMWR Early Release on the MMWR website (https://www.cdc.gov/mmwr). Yellow fever virus is a mosquito-borne flavivirus that causes yellow fever, an acute infectious disease that occurs in South America and sub-Saharan Africa. Most patients with yellow fever are asymptomatic, but among the 15% who develop severe illness, the case fatality rate is 20%...
Yellow fever and dengue are old diseases, having caused major epidemics in centuries past. Both were effectively controlled in the mid 1900s, yellow fever in Francophone Africa by vaccination and yellow fever and dengue in the Americas by effective control of the principal urban vector of both viruses, Aedes aegypti. In the last 25 years of the 20th century, however, there was a resurgence of y...
1. A method of testing sera for protective power against yellow fever is described and designated as the intraperitoneal protection test in mice. 2. The test consists essentially of the inoculation of mice intra-peritoneally with yellow fever virus, fixed for mice, together with the serum to be tested, and the simultaneous injection of starch solution into the brain to localize the virus. If th...
www.thelancet.com/lancetgh Vol 4 December 2016 e909 These defi ciencies might be common to most countries in Asia, making them vulnerable to the ongoing yellow fever epidemic. The data show that tourists entering Sri Lanka from selected west African and South American countries, especially via irregular routes, pose the highest risk of infection. However, the cases of yellow fever in China were...
Patients with rheumatic diseases are more susceptible to infection, due to the underlying disease itself or to its treatment. The rheumatologist should prevent infections in those patients, vaccination being one preventive measure to be adopted. Yellow fever is one of such infectious diseases that can be avoided.The yellow fever vaccine is safe and effective for the general population, but, bei...
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