Zika Was First Discovered in 1947. Why Is it Now a Threat?

Mostly innocuous and fairly unknown until a few weeks ago, the Zika virus is suddenly dominating the news. Under scrutiny is the virus's putative link with a congenital birth defect called microcephaly, which causes babies to be born with abnormally small heads and undeveloped brains. Two recent publications [1,2] have documented finding the genome of the Zika virus in the amniotic fluid and brains of fetuses affected by microcephaly from three different mothers. These numbers are still too small to constitute a proof, and in fact, alternative theories are already cropping up: an organization of Argentinean doctors has published a report in which they claim that it's not the virus, rather the insecticide used against the mosquitos, that causes the birth defect. But what is Zika and, if the claims about microcephaly turn out to be true, how can it be harmless to most people yet so detrimental to a developing fetus? To answer these questions we have to take a step back and understand how viruses work and why some are endemic in the population, while others seem to come and go in waves. The Zika virus was first isolated in 1947 from a rhesus monkey and from a pool of mosquitos in the Zika forest in Uganda. It belongs to the same family of viruses as dengue, yellow fever, and West Nile virus. However, unlike its close relatives, Zika was thought to be relatively harmless: most infected people experience no symptoms and a few have just a rash and mild fever. Originally confined ...
Source: Science - The Huffington Post - Category: Science Source Type: news

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Source: Carbohydrate Polymers - Category: Biomedical Science Source Type: research
Authors: Ferella A, Aguirreburualde MSP, Sammarruco A, Parreño V, Santos MJD, Mozgovoj M Abstract Bovine respiratory syncytial virus (BRSV) is one of the most relevant agents responsible for respiratory disease in cattle from both dairy and beef farms. BRSV is spread by horizontal contact causing a constant presence of seropositive animals that favors viral circulation throughout the year. Moreover, reinfections with BRSV are frequent between animals regardless of their age as BRSV does not confer long-lasting protective immunity. Several studies have demonstrated the circulation of BRSV in cattle from diffe...
Source: Revista Argentina de Microbiologia - Category: Microbiology Tags: Rev Argent Microbiol Source Type: research
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Source: Guardian Unlimited Science - Category: Science Authors: Tags: Coronavirus outbreak World news Science Infectious diseases Australia news UK news US news Microbiology Medical research Source Type: news
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Source: Revista Brasileira de Enfermagem - Category: Nursing Authors: Tags: Rev Bras Enferm Source Type: research
Abstract OBJECTIVE: to analyze the social conditions and life projects of non-pregnant adolescents, pregnant adolescents and pregnant women who are victims of domestic violence. METHODS: This is a exploratory, descriptive and comparative study of a quantitative and qualitative character. Ninety adolescents between 12 and 18 years old participated in the study, consisting of three groups: Group A (30 non-pregnant adolescents with no history of violence); Group B (30 pregnant adolescents with no history of violence); and Group C (30 pregnant adolescents with a history of violence). The tools used were a questio...
Source: Revista Brasileira de Enfermagem - Category: Nursing Authors: Tags: Rev Bras Enferm Source Type: research
[Thomson Reuters Foundation] Rome -Thursday's GAVI vaccine summit aims to help people in the developing world get access to any eventual coronavirus vaccine. What are the obstacles?
Source: AllAfrica News: Health and Medicine - Category: African Health Source Type: news
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Source: Social Science and Medicine - Category: Psychiatry & Psychology Source Type: research
Publication date: Available online 3 June 2020Source: NeuropsychologiaAuthor(s): Selene Petit, Nicholas A. Badcock, Alexandra Woolgar
Source: Neuropsychologia - Category: Neurology Source Type: research
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Source: Reuters: Health - Category: Consumer Health News Tags: healthNews Source Type: news
Novavax Inc said on Thursday the U.S. Department of Defense (DoD) will give the late-stage biotech company up to $60 million to fund the manufacturing of its experimental COVID-19 vaccine.
Source: Reuters: Health - Category: Consumer Health News Tags: healthNews Source Type: news
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