How is Zika virus raging in human history?

Discovered in 1947 on monkeys, Zika virus has circulated in 62 countries all over the world and has become a minor disease-causing disease on thousands of children, Vietnam has just recorded the first 2 shifts. .

According to the World Health Organization (WHO), in 1947 scientists monitored the yellow fever in Uganda forest, isolated a "strange" virus in monkeys, but no one had named it yet. for that virus. By 1948 "strange" virus continued to be found on Aedes africanus mosquitoes living in Zika forest. Since then this virus has been called Zika.

In 1952 the first study recorded a number of people living in Uganda and Tanzania with antibodies that neutralize serum Zika virus. This proves that they have been infected with Zika.

From 1969 to 1983, Zika influenced Asia, including India, Indonesia, Malaysia and Pakistan. The virus is detected in mosquitoes. The disease only causes a few mild symptoms, so many cases of infection are not detected, almost no one is paying attention and appreciating the danger of this virus. Scientists who conducted research on prevalence rates in Indonesia, Malaysia and Pakistan recorded a widespread epidemic. Nearly 20 investigators of population and Zika virus infection have a clinical similarity between patients infected with Zika and chikungunya and dengue fever.

In 2007 the strain Zika from Africa spread to Asia caused the first large outbreaks on humans in Yap Pacific Island, specifically the Federated States of Micronesia. Epidemiological researchers have sought to prevent by controlling each house on the island. The survey results show that among 11,250 people, there are 185 cases of suspected Zika virus infection.

From 2013 to 2014, the virus continued to cause epidemics in four other parts of the Pacific Island, including Polynesia, Easter Island, Cook Islands and New Caledonia. Remarkably in Polynesia, there are thousands of people suspected of Zika, many of whom suffer from polio and neuralgia (Guillain Barre). The disease causes weakness or numbness in the legs at many levels, then spread to the arms and upper body. These symptoms may increase until the patient is almost completely paralyzed.

Sequelae of Zika virus on newborns.(Photo: MDTTTT).

On March 2, 2015, Brazil's Ministry of Health reported a "strange" disease characterized by skin rash symptoms that appeared in the northeastern part of the country. The disease is thought to be related to a virus. From February to April 2015, nearly 7,000 patients in this region suffered from a rash. All are light, no death. The researchers took 425 blood samples for differential diagnosis, 13% positive for dengue fever. Trials of chikungunya, measles, rubella, parvovirus B19 and enterovirus were also conducted. However, no one paid attention to Zika, so it didn't test this virus.

The disease caused by Zika will continue to be overlooked if Brazilian scientists do not raise the bell for awakening to the whole of an increase in small head defects in newborns due to the virus. The small head club was first mentioned when a baby with small head disease was born from Brazilian mother infected with Zika virus. The disease includes many symptoms that seriously affect human life such as epilepsy, small head, steep forehead, short, short limbs, advocacy in speech and slow movement, intellectual stagnation, facial disturbance, Extraordinarily hyperactivity.

Brazilian researchers say the Zika virus entered the country from Polynesia during the 2014 FIFA World Cup competition. "The culprit" Z ika is confirmed to be the cause of outbreaks of dengue-like illness. in the north and east. In the districts of Camacari and the neighboring city of Salvador, Bahia state, a disease that causes flu-like symptoms but leads to rash and joint pain has been confirmed by the Federal University of Bahia researchers. Zika.

Brazil has so far recorded at least more than 6,700 cases of babies with small headaches. Signs of illness may occur when the baby is still in the womb or several years after birth. In early February of this year, the World Health Organization confirmed that there is a significant relationship between Zika infection and small head syndrome and other neurological disorders. This is considered an urgent public health issue that needs the attention of the international community.

Since the outbreak of late last year, so far the disease caused by Zika virus has spread in the most widespread area in history. The epidemic is raging in Latin America, constantly spreading to other countries in South America, Central America and the Caribbean. So far, 62 countries have recorded the epidemic. Vietnam also recently reported the first two cases, including a 33-year-old pregnant woman in HCMC and a 67-year-old woman in Khanh Hoa.

Studies on Zika's transmission route are still controversial. Most scientists agree that the virus is transmitted through Aedes aegypti mosquitoes that are common in tropical and subtropical America, in addition to the Aedes albopictus "Asian tiger mosquito". Blood-borne disease between people and people is not common. Pregnant women infected with this virus are at risk of transmission to their babies at birth but not through breast milk. Some studies show that sexually transmitted diseases, men can also suffer.

The most difficult thing now is that most of the cases of Zika are asymptomatic, making the estimated number of people infected incorrectly. Only about one fifth of the cases manifest as mild symptoms such as Zika fever and rash. This viral infection in pregnant women can lead to small head syndrome in newborns and Guillain-Barré syndrome. However, the Ministry of Health does not recommend any pregnant woman with Zika to give birth to a first child.