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HomeNewscoronavirusJoe Biden Urges Mexico to Do More to Stop Migration

Joe Biden Urges Mexico to Do More to Stop Migration

President Joe Biden has moved quickly to dismantle some of former President Donald Trump’s signature immigration policies, halting construction of a border wall, stopping the swift expulsion of children at the border and proposing a pathway to citizenship for millions of immigrants in the United States.

March 18, 2021 / 22:47 IST
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US President Joe Biden. (Image: AP)

The Biden administration has been quietly pressing Mexico to curb the stream of migrants coming to the United States, urging it to take in more families being expelled by U.S. authorities and to step up enforcement at its southern border with Guatemala, according to Mexican officials and others briefed on the discussions.

President Joe Biden has moved quickly to dismantle some of former President Donald Trump’s signature immigration policies, halting construction of a border wall, stopping the swift expulsion of children at the border and proposing a pathway to citizenship for millions of immigrants in the United States.

Story continues below Advertisement

But he is clinging to a central element of Trump’s agenda: relying on Mexico to restrain a wave of people making their way to the United States.

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How does a vaccine work?

A vaccine works by mimicking a natural infection. A vaccine not only induces immune response to protect people from any future COVID-19 infection, but also helps quickly build herd immunity to put an end to the pandemic. Herd immunity occurs when a sufficient percentage of a population becomes immune to a disease, making the spread of disease from person to person unlikely. The good news is that SARS-CoV-2 virus has been fairly stable, which increases the viability of a vaccine.

How many types of vaccines are there?

There are broadly four types of vaccine — one, a vaccine based on the whole virus (this could be either inactivated, or an attenuated [weakened] virus vaccine); two, a non-replicating viral vector vaccine that uses a benign virus as vector that carries the antigen of SARS-CoV; three, nucleic-acid vaccines that have genetic material like DNA and RNA of antigens like spike protein given to a person, helping human cells decode genetic material and produce the vaccine; and four, protein subunit vaccine wherein the recombinant proteins of SARS-COV-2 along with an adjuvant (booster) is given as a vaccine.

What does it take to develop a vaccine of this kind?

Vaccine development is a long, complex process. Unlike drugs that are given to people with a diseased, vaccines are given to healthy people and also vulnerable sections such as children, pregnant women and the elderly. So rigorous tests are compulsory. History says that the fastest time it took to develop a vaccine is five years, but it usually takes double or sometimes triple that time.
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