From the world with the world's leading vaccination rate, the United States dropped to 57 global position when facing hesitation of vaccines and divided parties.

Five months ago, the US surpassed most countries in the world, except Israel, about the speed of vaccination of Covid-19, with nearly 20% of the full vaccination population.

The rapid deployment rate and abundant vaccine sources are considered two factors that help the US achieve initial success in the vaccination campaign.

Portugal is an impressive European country in the race, with nearly 80% of the full vaccination population.

The US version is quite modest in the rich water group, with 53.9% of the population has been fully vaccinated.

President Joe Biden last week announced a new strategy with 6 spearheads responding to Covid-19, including mandatory vaccinations.

We have led and then lagged behind, Céline Gounder, an epidemiologist, said.

A vaccine with Vaccine Covid-19 in Martinsburg, West Virginia on March 11.

Israel's vaccination campaign is also slowed after the initial successes.

The US is paying for expensive prices when it cannot maintain a strong vaccination.

The US started a vaccination campaign with a great advantage of vaccines, thanks to pre-ordered contracts with the manufacturer before being approved by the US Food and Pharmaceutical Management Agency (FDA).

However, after the convenient vaccination with the population supporting the vaccine, the US tripped a big obstacle to the vaccination groups.

America currently ranks 7th in the G7 group, after Japan, England, Canada, France, Germany, Italy about the proportion of the population injecting at least one dose and ranking 6th in the full vaccination rate, according to NYTimes.

The proportion of high young population is also considered a factor affecting the US vaccination campaign.

However, when compared to a country such as Portugal, the vaccination rate for qualified population group in the US is also inferior.

Another big difference is about culture and politics.

The political division has contributed to the US lag behind European countries in the vaccination race, Josh Michaud, Deputy Director of Global Health Policy at the Kaiser Family Foundation, said.

Many European countries, especially France and Germany, also have a situation of vaccination, but the scale is not as large as in the US.

We do not need to convince people to vaccinate.

Historical obstacles may be the cause of success for Portuguese vaccination campaign, according to Augusto.

People are willing to vaccinate because infectious diseases are a big problem.

When the Democracy in Portugal is re-established and the economic conditions are improved, public health is also enhanced.

Portugal also experienced the worst Covid-19 outbreak, like the United States and many other countries around the world.

At the beginning of January, the number of cases and deaths increased rapidly.

People waiting for vaccination vaccine Covid-19 in Seixal, Portugal on March 22.

In Portugal, vaccination is considered the best way to escape the crisis.

Portugal also quickly adapted to transformative pandemic situation.

The effort was rewarded.

Don't you want to comply with regulations?

Meanwhile, the US President Biden government is struggling to find a way to bring the vaccine to the chain people.

The Biden administration has to switch to a mandatory vaccination campaign to increase the vaccine coating in the population, after incentives, calls and awards are no longer effective.

But these efforts will face fierce reactions from republican voters and politicians, Vox's Dylan Scott commentary said.