Novel vaccine proven effective against Zika virus

Agencies
August 8, 2018

Washington, Aug 8: A uniquely designed experimental vaccine against Zika virus has proven powerful in mice, scientists have found, paving the way for preventing the infection that causes babies to develop serious birth defects.

The vaccine, developed by researchers at Ohio State University in the US employs an uncommon two-pronged approach to fighting the virus, which is spread by mosquitoes and is most serious for pregnant women and their foetuses.

The single-dose vaccine, carrying the genes for two or three Zika proteins, proved effective in triggering an immune response that prevented later infection by Zika virus, researchers said.

"In this study, the vaccine was potent, safe and highly effective, at least in the short term. There's a long way to go, but we think this is a promising candidate for a human vaccine," said Jianrong Li, a professor at Ohio State, who led the study published in the journal Nature Communications.

Babies born to Zika-infected mothers are sometimes born with a birth defect called microcephaly.

Other complications include miscarriage, stillbirth and other birth defects. Research also suggests that a small percentage of people infected with the virus can contract Guillain-Barre syndrome, which affects the nervous system.

There's no vaccine available currently and the only protection against Zika are preventative measures such as insect repellant, staying indoors and wearing long sleeves and pants.

Shan-Lu Liu, a study co-author from Ohio State, said the experimental vaccine holds particular promise because it appears to afford an adequate immune response with one dose.

In hard-to-reach and resource-poor areas, that becomes especially valuable, he said.

The study included experiments in mice with severely compromised immune systems - a necessary step to make sure that mice could get sick after infection with Zika virus.

When the vaccinated mice were exposed to Zika virus, their weak immune systems fought it off swiftly and efficiently, convincing the research team that their design had worked.

The early success with this vaccine has encouraged this team to use the same approach to fight other related viruses, including dengue fever, the researchers said.

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News Network
March 11,2020

Mar 11: In a bid to keep its flock together, the crisis-hit Madhya Pradesh Congress has decided to shift its 92 MLAs either to Jaipur or some other place.

The move comes after 22 Congress MLAs loyal to former Union minister Jyotiraditya Scindia resigned on Tuesday, pushing the 15-month-old Kamal Nath government to the brink of collapse.

"We are going to take our 92 MLAs and those supporting our Madhya Pradesh government to a hotel," a senior Congress leader said on Wednesday.

The legislators would be taken either to Jaipur or some other Congress-ruled state like Chhattisgarh, a party source said.

Apart from its own MLAs, the Congress is also keeping a close watch on four Independents who are supporting the party-led state government.

On Tuesday, 22 Congress MLAs from Madhya Pradesh resigned soon after Scindia quit the party.

The development reduced the Congress government in the state to minority.

The state Congress unit is now making all efforts to save the Kamal Nath-led government.

The BJP on Tuesday night shifted its MLAs to Manesar at Gurugram in Haryana, sources in the saffron party said.

The Congress, whose tally before the rebellion was 114, has a wafer-thin majority in the Madhya Pradesh Assembly whose current effective strength is 228.

It also has the support of four Independents, two BSP legislators and one SP MLA, but some of them are now likely to switch sides to the BJP.

The BJP has 107 seats in the state Assembly.

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Agencies
February 27,2020

Washington D.C, Feb 27: New research shows that adults who have low fruit and vegetable intake are more likely to be diagnosed with an anxiety disorder.

"For those who consumed less than 3 sources of fruits and vegetables daily, there was at least at 24% higher odds of anxiety disorder diagnosis," says the lead author of the Canadian Longitudinal Study, Karen Davison, who is a health science faculty member, nutrition informatics lab director at Kwantlen Polytechnic University, (KPU) and North American Primary Care Research Group Fellow.

"This may also partly explain the findings associated with body composition measures. As levels of total body fat increased beyond 36%, the likelihood of anxiety disorder was increased by more than 70%," states co-author Jose Mora-Almanza, a Mitacs Globalink intern who worked with the study at KPU.

"Increased body fat may be linked to greater inflammation. Emerging research suggests that some anxiety disorders can be linked to inflammation," says Davison.

In addition to diet and body composition measures, the prevalence of anxiety disorders also differed by gender, marital status, income, immigrant status and several health issues.

An important limitation of the study was that the assessment of anxiety disorders was mostly based upon self-reporting of a medical diagnosis.

"It is estimated that 10% of the global population will suffer from anxiety disorders which are a leading cause of disability," says Karen Davison

"Our findings suggest that comprehensive approaches that target health behaviours, including diet, as well as social factors, such as economic status, may help to minimize the burden of anxiety disorders among middle-aged and older adults, including immigrants," she concluded.

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Agencies
July 15,2020

The first COVID-19 vaccine tested in the US revved up people's immune systems just the way scientists had hoped, researchers reported Tuesday -- as the shots are poised to begin key final testing.

No matter how you slice this, this is good news, Dr. Anthony Fauci, the U.S. government's top infectious disease expert, told The Associated Press.

The experimental vaccine, developed by Fauci's colleagues at the National Institutes of Health and Moderna Inc., will start its most important step around July 27: A 30,000-person study to prove if the shots really are strong enough to protect against the coronavirus.

But Tuesday, researchers reported anxiously awaited findings from the first 45 volunteers who rolled up their sleeves back in March. Sure enough, the vaccine provided a hoped-for immune boost.

Those early volunteers developed what are called neutralizing antibodies in their bloodstream -- molecules key to blocking infection -- at levels comparable to those found in people who survived COVID-19, the research team reported in the New England Journal of Medicine.

This is an essential building block that is needed to move forward with the trials that could actually determine whether the vaccine does protect against infection, said Dr. Lisa Jackson of the Kaiser Permanente Washington Research Institute in Seattle, who led the study.

There's no guarantee but the government hopes to have results around the end of the year -- record-setting speed for developing a vaccine.

The vaccine requires two doses, a month apart.

There were no serious side effects. But more than half the study participants reported flu-like reactions to the shots that aren't uncommon with other vaccines -- fatigue, headache, chills, fever and pain at the injection site. For three participants given the highest dose, those reactions were more severe; that dose isn't being pursued.

Some of those reactions are similar to coronavirus symptoms but they're temporary, lasting about a day and occur right after vaccination, researchers noted.

Small price to pay for protection against COVID, said Dr. William Schaffner of Vanderbilt University Medical Center, a vaccine expert who wasn't involved with the study.

He called the early results a good first step, and is optimistic that final testing could deliver answers about whether it's really safe and effective by the beginning of next year.

It would be wonderful. But that assumes everything's working right on schedule, Schaffner cautioned.

Moderna's share price jumped nearly 15 percent in trading after US markets closed. Shares of the company, based in Cambridge, Massachusetts, have nearly quadrupled this year.

Tuesday's results only included younger adults. The first-step testing later was expanded to include dozens of older adults, the age group most at risk from COVID-19.

Those results aren't public yet but regulators are evaluating them. Fauci said final testing will include older adults, as well as people with chronic health conditions that make them more vulnerable to the virus and Black and Latino populations likewise affected.

Nearly two dozen possible COVID-19 vaccines are in various stages of testing around the world. Candidates from China and Britain's Oxford University also are entering final testing stages.

The 30,000-person study will mark the world's largest study of a potential COVID-19 vaccine so far. And the NIH-developed shot isn't the only one set for such massive U.S. testing, crucial to spot rare side effects. The government plans similar large studies of the Oxford candidate and another by Johnson & Johnson; separately, Pfizer Inc. is planning its own huge study.

Already, people can start signing up to volunteer for the different studies.

People think this is a race for one winner. Me, I'm cheering every one of them on, said Fauci, who directs NIH's National Institute of Allergy and Infectious Diseases.

We need multiple vaccines. We need vaccines for the world, not only for our own country. Around the world, governments are investing in stockpiles of hundreds of millions of doses of the different candidates, in hopes of speedily starting inoculations if any are proven to work.

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