Covid infection plus a vaccine helps people fend off variants, study suggests

Asia's Tech News Daily

People are more able to fend off variants“>coronavirus variants if they have had Covid previously plus a vaccine, new research suggests.

US experts analysed data on people who had recovered from natural infection earlier in the pandemic and found that having a Covid vaccine enabled them to produce high-quality antibodies that could act against variants.

These antibodies were more powerful than those produced by either natural infection or vaccine alone.

The team, from the University of California Los Angeles, said the research suggested booster jabs could help against variants by “improving not only antibody quantity, but also quality”.

The study did not look specifically at the Omicron variant but adds to the body of evidence suggesting existing vaccines and boosters may offer some protection.

Writing in the journal of the American Society For Microbiology, the team said: “We confirmed that some mutations reduce the ability of antibodies to neutralise the spike protein, whether the antibodies were from past infection or vaccination.

“Upon retesting the previously infected persons after vaccination, their antibodies gained the same ability to neutralise mutated spike as the original spike, suggesting that the combination of infection and vaccination drove the production of enhanced antibodies to reach a maximal level of potency.

“Whether this can be accomplished by vaccination alone remains to be determined, but the results suggest that booster vaccinations may help improve efficacy against spike variants through improving not only antibody quantity, but also quality.”

An area of the virus spike protein called the receptor binding domain (RBD) is known to enable the Covid virus to invade a host cell.

This region is also a critical target for antibodies but random mutations in the RBD mean it is an ever-changing target.

In the new study, scientists compared anti-RBD antibodies in the blood of some people to the ability of the antibodies to neutralise the virus.

In people who had never had Covid but who had received a vaccine, antibodies were less effective against mutations in the Beta and Gamma variants than against the original Wuhan strain of the virus.

Similarly, when researchers analysed blood samples from people who had suffered Covid before May 2020 – and before the first confirmation of variants – they had reduced protection against variants.

The experts said this suggests that both mild infection and vaccines produce antibodies that still leave a person vulnerable to new variants.

However, those who suffered Covid before May 2020 and who had a vaccine a year later had antibodies that were just as potent against variants as against the original Wuhan strain.

Immunologist and lead researcher Dr Otto Yang said finding the ideal mix of antibodies could help guide future efforts to tackle Covid-19.

Internet Explorer Channel Network
Asia's Tech News Daily
News Related

OTHER NEWS

Radar satellite's stunning map of UK and Ireland

The map was assembled from just seven overflights in December Here's a view of the UK and Ireland you won't have seen before. The mosaic is made from imagery acquired ... Read more »

Organica raises W43b from China‘s CITIC Capital

Ryan Jung wook Hong, founder and chairman of Organic (Organica)Organica, a plant-based food company based in Korea, has raised an investment of 43 billion won ($36.1 million) from CITIC Capital, ... Read more »

S. Korea gets ready for Saudi Arabia's nuclear power project: minister

RIYADH, Jan. 19 (Yonhap) — South Korea’s government has completed preparations in case Saudi Arabia resumes its procedure for a nuclear power project, a Seoul minister said Wednesday. Moon Sung-wook, ... Read more »

China cyberspace regulator drafts new rules for internet behemoths: Report

China‘s cyberspace regulator has drafted new guidelines that will require the country’s internet behemoths to obtain its approval before they undertake any investments or fundraisings, sources familiar with the matter ... Read more »

McAfee Enterprises and FireEye to be called Trellix post-merger

McAfee Enterprise and FireEye, the two leading cyber-security firms, will now be called Trellix post-merger, the companies said on Wednesday.Private equity firm Symphony Technology Group (STG) had completed the merger ... Read more »

Boris Johnson: 'Pork pie plot' to oust PM gathers pace as loyalists launch 'Operation Red Meat' in bid to save him

Boris Johnson is preparing to face MPs in the Commons amid claims that support among Tory MPs is “haemorrhaging away” and he is on the brink of being removed from ... Read more »

‘It was pure terror': Couple suing cruise giant Royal Caribbean over deadly ‘Ring of Fire' volcanic eruption

Matt Urey and Laura Barham on White Island, moments before the eruption (Courtesy of Matt Urey and Laura Barham) As they watched footage on the news of Tonga’s “once-in-a millennium” ... Read more »

Xiaomi 11T Pro with 120W charging support launches in India: Price, specs and offers on Xiaomi's new ‘HyperPhone'

Xiaomi 11T Pro smartphone has launched in India. Dubbed HyperPhone, the company is calling the smartphone its first flagship of the year 2022. The smartphone joins the other models in ... Read more »

Will monitor COVID-19 situation for 2-3 days before reviewing curbs: Delhi health minister

Delhi Health Minister Satyendar Jain on Wednesday said the government will monitor the COVID-19 situation for three to four days to confirm the trend of positivity rate before reviewing the ... Read more »

KENTECH criticized for 'ill-prepared' commendation award

The construction site of Korea Institute of Energy Technology (KENTECH) in Naju, South Jeolla Province. Yonhap KEPCO CEO Cheong Seung-il By Lee Kyung-min Criticism is mounting over the government’s plan ... Read more »

London Covid: Boris Johnson expected to scrap restrictions but one important rule could remain

It is expected that Prime Minister Boris Johnson will announce that Plan B rules will be scrapped in England. The PM is set to update MPs on Wednesday (January 19) ... Read more »

Samsung battling TSMC, Intel to be global leader in foundry business

By Baek Byung-yeul Samsung Electronics is facing growing competition with its rivals in the foundry business, as TSMC and Intel are expanding their investments in the rapidly growing, contracted semiconductor ... Read more »

SillaJen investors likely to take legal action

SillaJen shareholders call for the trading of the biotech company’s stocks to be resumed in front of the Korea Exchange’s building on Yeouido, Seoul, Tuesday. Yonhap Final decision for biotech ... Read more »

LG Energy Solution sets record 114 tln won in IPO retail bids

By Kim Seung-yeon SEOUL, Jan. 19 (Yonhap) — South Korean battery maker LG Energy Solution Ltd. (LGES) drew record high demand from retail investors in the public subscription for its ... Read more »

Flipkart Big Saving Days Sale 2022 Live: Here are the best deals on smartphones

Flipkart’s Big Saving Days sale is currently underway and will go on till January 22. If you are looking to buy a smartphone, then there’s no better time than the ... Read more »

Labor issue potential risk to SK ecoplant's IPO

SK ecoplant CEO Park Kyoung-il presides over an extraordinary meeting of shareholders at the company headquarters building in Seoul in this December 2021 file photo. Courtesy of SK ecoplant By ... Read more »

K'taka CM recovers from COVID, says decision on relaxing curbs likely on Jan 21

Karnataka Chief Minister Basavaraj Bommai on Wednesday said his government will re-examine the COVID-19 curbs that are in place, and will take a decision regarding relaxation, including the weekend curfew ... Read more »

SC pulls up States on disbursal of COVID-19 death claims, summons AP, Bihar chief secretary at 2PM

The Supreme Court on Wednesday pulled up state governments for failing to disburse claims to the next of kin of COVID-19 victims, and issued a show cause notice to the ... Read more »

Market trade lower for second consecutive day: 6 factors that are dragging the indices

India’s benchmark Sensex and Nifty indices  declined for second straight session falling over 1.4% each tracking losses in global equities amid expectations of rate hike by federal reserve and surge ... Read more »

FTC fines feared to prompt foreign regulators to sanction local shippers

A Hyundai Merchant Marine containership using eco-friendly bio heavy oil is seen in this file photo. Courtesy of HMM Taiwanese, Singaporean firms consider filing lawsuits By Park Jae-hyuk A decision ... Read more »

Mandatory Chinese Olympics app has 'devastating' encryption flaw: analyst

All those attending the Olympics in Beijing have to download MY2022, an app China says is to monitor Covid, but which anaylsts warn has “devastating” security flaws WASHINGTON: An app ... Read more »

Chinese smartphone shipments rebound with 15.9 per cent growth in 2021, with 5G models dominant

The smartphone market in China rebounded last year after a pandemic-induced slump in 2020, although total sales have yet to reach 2019 levels, according to the latest data from a ... Read more »

Metaverse scramble exposes Samsung's software weakness

(123rf)Samsung Electronics’ obsession for foldable smartphones is drawing market concerns as the South Korean tech giant is missing out on what’s coming next: The metaverse. According to market tracker TrendForce ... Read more »

Thomas Tuchel says Chelsea need to ‘recharge batteries' after Brighton draw

Thomas Tuchel says Chelsea need to “recharge the batteries” after blaming tiredness for their lacklustre performance in the 1-1 Premier League draw at Brighton The European champions’ fading title hopes ... Read more »

iPhone 13 strong sales help Apple lead the global smartphone shipments in Q4 2021

Apple iPhone 13 | Photo credit: Sahej Brar / Unsplash The launch of the iPhone 13 series in fall 2021 has once again helped Apple claim the number one spot in the global ... Read more »

Man kept as slave in shed for 40 years on caravan park near Carlisle

A man has been jailed for keeping another man prisoner in a six-foot shed on a caravan park for more than 40 years. Peter Swailes, 56, kept a vulnerable worker ... Read more »

EXPLAINER: Why Tonga eruption was so big and what's next

The Associated PressFILE – This satellite image provided by Maxar Technologies shows an overview of Hunga Tonga Hunga Ha’apai volcano in Tonga on Jan. 6, 2022, before a huge undersea ... Read more »

Ancient metal tubes unearthed in 1897 could be oldest surviving drinking straws

A set of ancient gold and silver tubes dating to about 5,500 years ago and unearthed in North Caucasus in Russia could be the world’s oldest surviving drinking straws, experts ... Read more »

The 7 hair and nail trends you'll see at every 2022 wedding.

© Getty Images The 7 hair and nail trends you’ll see at every 2022 wedding. After another year of COVID fluffing about, there’s good news on the wedding front: they ... Read more »

Read Satya Nadella's email to Microsoft employees on the company's biggest-ever acquisition

Microsoft made its biggest acquisition when it forked out close to $69 billion in an all-cash deal for Activision Blizzard. One of the biggest game developers — with titles like ... Read more »

New study finds face masks actually make you more attractive

It turns out that a face mask could be the best wingman to secure your next date. A UK study has discovered that medical face masks can actually increase “facial ... Read more »

‘Among Us' updates: Innersloth reveals 2022 roadmap includes ‘Hide'n'Seek' mode and ‘collabs'

From the trailer of ‘Among Us – The Airship’ | Innersloth / YouTube screenshot “Among Us” developer Innersloth has huge plans for the game this year. The studio released its ... Read more »

S. Korea to raise minimum wage of foreign crews to eliminate discrimination

SEOUL, Jan. 19 (Yonhap) — South Korea has decided to raise the minimum wage of foreign crew members on local fishing boats to the level received by their Korean colleagues ... Read more »

South Africa vs India live stream: how to watch 1st ODI cricket online from anywhere

South Africa and India are swapping the red ball for white. After a superb, evenly-contested Test series, it’s time for a trio of ODIs…and the tourists are baying for vengeance. ... Read more »

Covid news - live: WHO warns pandemic ‘nowhere near over' as Boris Johnson is expected to ease rules in UK

© AP CORONAVIRUS-EEUU LIVE – Updated at 05:05 The Covid-19 pandemic is far from over, the World Health Organisation chief has said, cautioning against taking the Omicron variant lightly. Dr ... Read more »

Doosan and Saudi Arabia to build joint casting and forging facility

SEOUL, Jan. 19 (Yonhap) — South Korea’s major power plant builder Doosan Heavy Industries & Construction said Wednesday it has signed a deal with Saudi Arabian Industrial Investments Co. and ... Read more »

S. Korea's spy agency detects malware infection in over 100 local IoT devices

SEOUL, Jan. 19 (Yonhap) — South Korea’s state intelligence agency said Wednesday it has identified more than 100 sets of Internet of Things (IoT) equipment in the country that have ... Read more »

Reasserting U.S. leadership in microelectronics

MIT researchers lay out a strategy for how universities can help the U.S. regain its place as a semiconductor superpower. Read more »

When should someone trust an AI assistant's predictions?

Researchers have created a method to help workers collaborate with artificial intelligence systems. Read more »

Tesla Pi gets my motor running

I admit it, I'm getting excited about the Tesla Pi phone due out this year. The rumours have been flying fast and furious but there are some seemingly solid predictions. ... Read more »
On free-english-test.com you will find lots of free English exam practice materials to help you improve your English skills: grammar, listening, reading, writing, ielts, toeic