CNN
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come and see Zika virus, one Disease spread through mosquito bites This can lead to birth defects and other neurological defects.
source: U.S. Centers for Disease Control and Prevention (CDC), World Health Organization (WHO) and CNN
Zika virus is a flavivirus that belongs to the same family as yellow fever, West Nile virus, chikungunya and dengue.
Zika virus is primarily transmitted through the bite of infected female Aedes aegypti mosquitoes. It becomes infected by biting an infected person, and then transmits the virus to another person. Aedes aegypti is an aggressive species that is active diurnal and usually bites when the lights are out.The virus can be passed from a pregnant woman to the fetus through sexual contact, blood transfusion, or sexual contact with a needle.
FDA approved First human trial of Zika vaccine June 2016. As of May 2022, there is still no vaccine or drug available.
Most people infected with Zika virus do not develop symptoms.If there is symptomand they last from a few days to a week.
Fever, rash, joint pain, and conjunctivitis (red eye) are the most common symptoms. Some patients may also experience muscle pain or headache.
Zika virus infection during pregnancy can lead to microcephaly, A neurological disorder that causes babies to be born with abnormally small heads. Microcephaly can cause serious developmental problems and sometimes death. Zika virus infection may lead to other birth defects, including eye problems, hearing loss and developmental disabilities. Miscarriage may also occur.
A CDC report released in August 2018 estimated that, Nearly one in seven babies is born to an infected woman People infected with Zika virus during pregnancy have one or more health problems that may be caused by the virus, including microcephaly.
According to the CDC, there is no evidence that previous infections affect future pregnancies.
1947 – this Scientists studying yellow fever in the Zika Forest in Uganda first identified the Zika virus in a monkey.
1948 – The virus was isolated from samples of Aedes africanus mosquitoes in the Zika forest.
1964 – First active case of Zika virus detected in humans. While researchers have found antibodies in the blood of people in Uganda and Tanzania as far back as 1952, this is the first known case of active virus in humans. The infected man developed a pink rash over most of his body, but he reported a “mild” condition with no pain associated with dengue and chikungunya.
1960s to 1980s – A handful of countries in West Africa and Asia have found Zika virus in mosquitoes, and isolated rare cases have been reported in humans.
April to July 2007 – The first major human outbreak occurred on the island of Yap in the Federated States of Micronesia. Of the 185 suspected cases reported, 49 were confirmed and 59 were considered probable. There are another 77 suspected cases. No deaths were reported.
2008- Two U.S. researchers studying in Senegal have contracted the Zika virus after returning to the U.S. Subsequently, One of the researchers passed the virus on to his wife.
2013-2014 – French Polynesia has a Zika virus outbreak with around 32,000 suspected cases. There were also outbreaks in the Pacific islands during this time. A rise in Guillain-Barré syndrome cases over the same period suggests a possible link between Zika virus and the rare neurological syndrome. However, this was not confirmed as dengue outbreaks were also going on in these islands at the time.
March 2015 – Brazil has alerted WHO to a rash disease in the north-eastern part of the country. From February 2015 to April 29, 2015, nearly 7000 cases of rash were reported. Later this month, Brazil provided more information on the diseases to the WHO.
April 29, 2015 – A national laboratory in Brazil notified the World Health Organization that preliminary samples tested positive for Zika virus.
May 7, 2015 – An outbreak of Zika virus in Brazil has prompted an epidemiological alert from the World Health Organization and the Pan American Health Organization (PAHO).
October 30, 2015 – Brazil reported an increase in cases of microcephaly, where babies are born with abnormally small heads: 54 cases between August and 30 October.
November 11, 2015 – Brazil has declared a national public health emergency as the number of newborns born with microcephaly continues to rise.
November 27, 2015 – Brazil reported that it was examining 739 cases of microcephaly.
November 28, 2015 – Brazil has reported three deaths from Zika virus infection: two adults and one newborn.
January 15-22, 2016 – this CDC advises anyone who is pregnant or planning to become pregnant Postpone travel or consult their doctor before traveling to any country where Zika virus is active.
February 2016 – this Zika virus was found in brain tissue samples from two Brazilian babies who died within a day of birth, as well as fetal tissue samples from two miscarriages, the CDC reported For the first time, a potential link between Zika virus and an increase in birth defects, stillbirths and miscarriages among mothers infected with the virus has been demonstrated.
February 1, 2016 – this WHO declares Zika virus public health emergency of international concern Due to an increase in neurological disorders such as microcephaly in French Polynesia and Brazil.
February 8, 2016 – this CDC raised its Zika Emergency Operations Center to Level 1, the CDC’s highest response level.
February 26, 2016 – With signs that mosquito-borne Zika virus is causing microcephaly in newborns, CDC advises pregnant women to ‘consider not’ Olympic Games in Rio de Janeiro. The CDC later stepped up its advice, telling pregnant women to “don’t go to the Olympics.”
March 4, 2016 – The USOC announced the creation of an Infectious Disease Advisory Group to help the USOC establish “best practices in the mitigation, assessment and management of infectious diseases, with a particular focus on how the issue may affect athletes competing in the upcoming Olympic and Paralympic Games Play with the staff.”
April 13, 2016 – in a press conferenceCDC Director Thomas Frieden said, “It is now clear that the CDC has concluded that Zika virus does cause microcephaly. This confirmation is based on A comprehensive review of the best scientific evidence conducted by the CDC and other experts in maternal and fetal health and mosquito-borne diseases. ”
May 27, 2016 – More than 100 famous doctors and scientists sign open letter to WHO Director-General Margaret Chancalling for the postponement or rescheduling of the Summer Olympics in Rio de Janeiro “in the name of public health” due to the expanding Zika virus outbreak in Brazil.
July 8, 2016 – Utah health officials report that First Zika-related death in continental U.S..
August 1, 2016 – CDC advises pregnant women and their partners not to travel to Miami’s Wynwoo neighborhoodd Because four cases of the disease have been reported in this small community and local mosquitoes are believed to be spreading the disease.
September 19, 2016 – The CDC announced it had successfully reduced the number of Zika-carrying mosquitoes in Wynwood and lifted its warning for community travel.
November 18, 2016 – this The WHO declared the Zika virus outbreak no longer a public health emergency, shifting focus to a long-term program of research into diseases and birth defects linked to the virus.
November 28, 2016 – health officials announced Texas has become the second state in the continental United States to confirm a case of locally transmitted Zika virus.
September 29, 2017 – this CDC suspends emergency response to Zika viruslaunched in January 2016.