WASHINGTON, United States (AFP) — US health authorities on Saturday cleared the Pfizer and Moderna Covid-19 vaccines for children aged five and younger, in a move President Joe Biden greeted as a “monumental step” in the fight against the virus. The United States thus became the first country to approve use of the so-called mRNA vaccines for children as young as six months. The US Food and Drug Administration (FDA) had on Friday authorized their […]