News / Health

    Brazil Partners With US Scientists to Find Zika Vaccine

    FILE - A technician of the Fiocruz institue stores Aedes aegypti mosquitoes to be used in research, in Recife, Pernambuco state, Brazil, Wednesday, Jan. 27, 2016.
    FILE - A technician of the Fiocruz institue stores Aedes aegypti mosquitoes to be used in research, in Recife, Pernambuco state, Brazil, Wednesday, Jan. 27, 2016.
    VOA News

    Brazil has announced an agreement with a U.S. university to develop a vaccine against the Zika virus within 12 months.
     
    At a news conference Thursday, Health Minister Marcelo Castro said the Brazilian government will invest $1.9 million towards the partnership between the University of Texas and Brazil's Evandro Chagas Institute over the next five years.
          
    Castro said the Health Ministry also has reached vaccine partnerships with the U.S. Centers for Disease Control and Prevention and is looking to work with pharmaceutical giant GSK.


    At a U.S. Senate hearing on Zika Thursday, CDC Director Thomas Frieden said developing a safe and effective vaccine is of “immediate importance.”
     
    “We are discovering more literally every day this is a new phenomenon and we are working around the clock to learn as much as we can and as quickly as we can and share that information with people and take appropriate action,” said Frieden.
     
    Frieden and other U.S. public health officials testifying before the congressional committee said much of the anti-Zika effort must focus on mosquito control. 

    They said southern parts of the United States, as well as the territory of Puerto Rico, harbor the mosquito that spreads the virus and are vulnerable to outbreaks of the disease.
     
    “Florida, Texas and the southern U.S. have the mosquito that spreads this [virus] very well, Frieden said, "and that’s why we want to be able to support [Brazil], both diagnosing people who have Zika and controlling mosquitos that may spread Zika.”

    On Wednesday, the New England Journal of Medicine published a report showing new evidence strengthening the link between the Zika virus and an increase in certain birth defects.

    The report by a group of Slovenian researchers was accompanied by an editorial by a group of U.S. health experts who support the conclusions made by the Slovenian study.

    Professor Tatjana Avsic Zupanc, who headed the study at University Medical Center in Ljubljana, told Reuters news agency that her team's findings may provide the most compelling evidence yet that birth defects associated with the Zika virus may be caused by replication of the virus in the brain.

    Daniele Ferreira dos Santos feeds her son Juan Pedro, who suffers from microcephaly, as they wait to be examined at the Altino Ventura Foundation, a treatment center that provides free health care, in Recife, Pernambuco state, Brazil, Feb. 4, 2016.
    Daniele Ferreira dos Santos feeds her son Juan Pedro, who suffers from microcephaly, as they wait to be examined at the Altino Ventura Foundation, a treatment center that provides free health care, in Recife, Pernambuco state, Brazil, Feb. 4, 2016.

    Fetal abnormalities

    The study centered on an expectant mother who was infected with the Zika virus and aborted the fetus after an ultrasound showed signs of severe fetal abnormalities. The study said the mother had no family history of such abnormalities and had not been exposed to any other viruses and other infections known to cause such abnormalities.

    The doctors in the study performed an autopsy on the fetus and were able to identify the complete genetic sequence of the Zika virus. They also noted that the virus had only attacked the brain and no other fetal organs.

    The researchers said the brain tissue of the fetus was found to have a high level of Zika virus RNA, in addition to containing a complete Zika genome sequence - two findings that present "strong evidence" that Zika caused the abnormalities.

    But the researchers noted that further study should be done to confirm a link.

    The Zika virus has risen in prominence with news that Brazil has seen a rise in cases of microcephaly, or underdeveloped brains, in newborns that coincides with the rise in Zika virus infections.

    Isabela Cristina, 18, who is six months pregnant, shows a photo of her ultrasound at the IMIP hospital in Recife, Pernambuco state, Brazil, Feb. 3, 2016.
    Isabela Cristina, 18, who is six months pregnant, shows a photo of her ultrasound at the IMIP hospital in Recife, Pernambuco state, Brazil, Feb. 3, 2016.

    Expert recommendations

    Some health experts are recommending pregnant women, or women trying to get pregnant, avoid travel to Brazil - which is preparing to host the 2016 Summer Olympic Games.

    U.S. public health officials testifying before congressional committees Wednesday said much of the anti-Zika effort must focus on mosquito control.  They said southern parts of the United States, as well as the territory of Puerto Rico harbor the mosquito that spreads the virus and are vulnerable to outbreaks of the disease.

    The World Health Organization has declared the Zika virus is a global public health emergency, and predicts that up to 4 million people could be infected between now and the end of the year. 

    Dozens of global health professionals - including researchers, academic journals and funding organizations - have committed to sharing data on the virus.

    In a statement released Wednesday and signed by more than 30 organizations, the groups say they want to ensure that any information relevant to combating Zika is made freely and openly available to the international community as "soon as is feasibly possible."

    Signatories include the Bill and Melinda Gates Foundation, Doctors Without Borders, PLOS (Public Library of Science), the U.S. Centers for Disease Control and Prevention, along with China’s counterpart, the JAMA (Journal of the American Medical Association) Network, and the U.S. National Institutes of Health. Researchers who signed the agreement were assured that their work would still be eligible for publication in science journals.

    Signs and symptoms of the Zika virus include fever, rash, headache, conjunctivitis and pain in the joints, muscles, and eyes.  It usually results in mild illness, but the virus poses a greater danger to pregnant women because of the possible link to birth defects.

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