The 'two-track pandemic,' EU vaccine passports and Project S: What to know about Covid-19 this week - CNN

While rich countries with high rates of vaccinated people are starting to talk about ending restrictions, many nations still face extremely dangerous situations, with deaths rising in Africa, the Americas and the Western Pacific in the last week.

Of the 1.77 billion doses of Covid vaccines administered globally, 28% have been in the world's richest nations, while just 0.3% of vaccines have been given in low-income countries, Oxfam International said last week.

The Biden administration has announced a plan to share an initial 25 million Covid-19 vaccine doses with the rest of the world, with the aim to distribute at least 80 million doses by the end of June.

On Friday, President Biden will meet the leaders of Britain, France, Germany, Italy, Canada and Japan on Friday at the G7 summit, where vaccine production and the global inoculation campaign remain high on the agenda.

As infections continue to fall in the US, children now account for about 25% of total Covid-19 cases, with unvaccinated children becoming a "vulnerable host" for coronavirus.

A separate study from the US CDC shows that people who have been fully vaccinated are more than 90% protected against infection and, if they do fall ill, have milder disease than unvaccinated people.

At each level, the agency recommends getting vaccinated, but its guidance for unvaccinated people varies by how severe the pandemic is in each country.

Level 1 countries like Australia and New Zealand are considered the lowest risk destinations, and they have reported less than 50 Covid-19 cases in the last 28 days.

A delegation of US senators visited Taiwan on Sunday to announce the donation of 750,000 doses of Covid-19 vaccine.

Nationwide, Brazil has the second-highest number of deaths from Covid-19 in the world, after the US, and it is heading into its third wave with daily cases and deaths on the rise.

Assess how protected you are: For the most part, unvaccinated people are primarily a risk to other unvaccinated people but aren't much of a risk to the vaccinated.

(And the vaccinated aren't much of a risk to them.) Experts say for most people, in most situations where we are not close to people for a long period of time, it's about assessing the situation that you're in and taking steps to mitigate the risk.