We depend on our microbiome. We each host trillions of micro-organisms. If the mix is right, they help keep us healthy. They play a major role in tuning the immune system, as it learns to distinguish friend and foe.
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A three-month study suggests antibody response to the coronavirus falls over time, leading to a possible decline in immunity. But it remains unclear how great the chance of a second infection is.
The pharmaceutical company has said its vaccine would likely be effective against the new highly contagious COVID-19 variant. Meanwhile, BioNTech-Pfizer has begun shipping its vaccine across Europe. DW has the latest.
It will take until 2022 to vaccinate all of Germany's population, the head of the country's vaccine panel said. Meanwhile, Britain became the first country to approve a vaccine. DW rounds up the latest developments.
The US president has signed an order to ensure US citizens are prioritized in the distribution of US-made vaccines before other countries. They will also receive the doses for free. Follow DW for the latest.
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