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Artikel-artikel mengenai Antibodies

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Researchers are working to develop vaccines that provide long-term immune protection from COVID-19. Marko Geber/Digital Vision via Getty Images

How long does protective immunity against COVID-19 last after infection or vaccination? Two immunologists explain

Because COVID-19 is a relatively new virus, researchers still aren’t sure exactly how long vaccines and prior infections provide protection.
New variants of SARS-CoV-2, the virus that causes COVID-19, arise through mutations when the virus replicates in an infected host’s cells. (NIAID, cropped from original)

How new COVID-19 variants emerge: Natural selection and the evolution of SARS-CoV-2

COVID-19 variants are the products of the evolution of the SARS-CoV-2 virus. They arise via mutations, but other forces also have roles to play in the generation and transmission of variants.
Preliminary research suggests that the omicron variant may potentially induce a robust immune response. Olga Siletskaya/Moment via Getty Images

Is the omicron variant Mother Nature’s way of vaccinating the masses and curbing the pandemic?

Some of the omicron variant’s unique properties – such as its ability to spread rapidly while causing milder COVID-19 infections – could usher in a new phase of the pandemic.
The omicron variant possesses numerous mutations in the spike protein, the knob-like protrusions (in red) that allow the virus to invade other cells. Juan Gaertner/Science Photo Library via Getty Images

Will omicron – the new coronavirus variant of concern – be more contagious than delta? A virus evolution expert explains what researchers know and what they don’t

It’s too early to say whether the newly identified omicron variant is going to overtake delta. But particular mutations in the new strain have researchers deeply concerned.
Pregnancy poses significant risks for severe illness or death from COVID-19, for both mother and baby. ArtMarie/E+ via Getty Images

Vaccination against COVID-19 supports a healthy pregnancy by protecting both mother and child – an immunologist explains the maternal immune response

In light of mounting research showing the serious risks of contracting COVID-19 during pregnancy, the CDC is re-upping its urgency that pregnant women get their shots.
Public health officials have been waiting for good data before making any decisions about booster shots for people who received Johnson & Johnson’s Janssen COVID-19 vaccine. AP Photo/Mary Altaffer

New Johnson & Johnson data shows second shot boosts antibodies and protection against COVID-19 – but one dose is still strong against delta variant

Your body produces antibodies after an infection or vaccine, but these slowly decline over time. New Johnson & Johnson data sheds light on the duration of protection and the need for booster shots.
People getting vaccinated may still have questions about COVID-19 vaccines, like why it takes two doses — and then two weeks — to take full effect. THE CANADIAN PRESS/Ryan Remiorz

I work at a COVID-19 vaccine clinic. Here’s what people ask me when they’re getting their shot — and what I tell them

A medical student answers questions he gets asked at a COVID-19 vaccine clinic: Efficacy versus real-world effectiveness, immune response and how the mRNA vaccines compare to vaccines already in wide use.

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