As of Sunday, uptake of the third shot in the United Kingdom (55.4% of the total population), Germany (55%), France (51.1%) and Canada (44%) dwarfed the US figure of 27.6%, according to Our World in Data. Evidence showing high rates of protection against the virus from three doses, and an Omicron variant-fueled surge in cases in the US, has struggled to convince the American public to take the third shot, CNN’s Jacqueline Howard reports. According to CNN analysis of US Centers for Disease Control and Prevention (CDC) data, the pace of booster doses going into arms is the lowest it has been in months. Experts say Covid-19 fatigue and the partisan divide, which has plagued America’s vaccination campaign, is partly responsible for these figures: A Kaiser Family Foundation survey released last month found that 58% of fully vaccinated Democrats who have not had the booster expressed interest in a third dose, compared to just 18% of fully vaccinated Republicans who have not had it. Waning immunity is complicating the situation. Israel began vaccinating at-risk populations and people over 60 with a fourth dose January 2, and a pre-print study from the country suggests that the extra shot of Pfizer/BioNTech seems to provide better protection from infection and severe illness than three shots of the vaccine. CDC studies released last week showed that there were fewer emergency department visits and hospitalizations after the third dose than after the second dose – but its effectiveness declined over time. The United States can “move forward safely” into a less disruptive phase of the pandemic, a maskless US President Joe Biden said in his first State of the Union address Tuesday night, in which he outlined his plan to emerge from the Covid-19 pandemic. YOU ASKED. WE ANSWERED. Q: Several screenshots on social media are claiming that Canadian Prime Minister Justin Trudeau posted on Facebook encouraging people not to interact with the unvaccinated. Is it true? A: No. The Facebook post in the screenshot is phony. Trudeau did not post any message encouraging anyone to make life difficult for the unvaccinated, Tara Subramaniam and Clara Grudberg report. The US Food and Drug Administration (FDA) is waiting for Pfizer-BioNTech to submit data from an ongoing trial on a three-dose regimen in these younger children before moving forward with consideration of an emergency use authorization. The Pfizer/BioNTech vaccine is currently authorized for use in people as young as five. If the new emergency use authorization is granted, this shot will be the first coronavirus vaccine available for the youngest children – and the tentative plan is to roll out about 10 million vaccine doses initially, according to a CDC document. Send your questions here. Are you a health care worker fighting Covid-19? Message us on WhatsApp about the challenges you’re facing: +1 347-322-0415. READS OF THE WEEK Last November, Costa Rica became the first country in the world to mandate Covid-19 vaccines for minors, with all children 5 and older required to get vaccinated, barring medical exemptions. Now, a small, yet vocal group of parents – like the ones that encircled the hospital last week – is opposing the measure, catapulting the debate around mandatory vaccines onto the floors of Congress. Canada’s Prime Minister Justin Trudeau has invoked emergency powers in an attempt to sever financial support for the “Freedom Convoy” protests that have clogged streets in the Canadian capital Ottawa for weeks. They have also impeded access to the busiest land crossing in North America as truck drivers and their supporters demonstrate against vaccine mandates and pandemic control measures. The Emergencies Act can provide for the use of the military, but may not necessarily lead to that, and Trudeau said the government is not bringing in troops. The act can also temporarily suspend citizens’ rights to free movement or assembly. And the government is taking steps to stop financial support of illegal protests, Kelly McCleary and Holly Yan report. The news comes after the Ambassador Bridge between the US and Canada reopened Sunday and Ontario, Canada’s most populous province, announced plans to loosen pandemic restrictions. “Our hospitalization rates now are higher than they even were at the peak of our Delta surge,” Walensky said. “So in this moment our recommendations are consistent with encouraging students to wear well-fitting masks. And that’s consistent with our guidance that still also recommends that people mask in public indoor settings in areas of high or substantial transmission.” China’s borders have been virtually closed for two years because of Covid, and the government has granted limited visas for journalists. The Beijing Winter Olympics offered a rare chance for CNN’s Selina Wang to return to the country. Millions of children have lost a parent or caretaker to Covid-19, study estimates Eating disorders are often triggered or exacerbated by stress, so like many specialists, Norris was worried the upheaval caused by the pandemic would trigger youths (and adults) who were in recovery from known eating disorders to relapse. Camilla, Duchess of Cornwall, tested positive for Covid-19, Clarence House said on Monday, four days after her husband Prince Charles was revealed to have contracted the virus, CNN’s Max Foster and Hannah Ryan report. Charles started isolating on February 10 after testing positive for the virus for the second time. The 73-year-old heir to the UK throne, who is fully vaccinated, had met with Queen Elizabeth “recently,” a royal source told CNN after his latest infection was announced. The source did not elaborate on how recently the meeting took place. Covid-19 is killing more people in the US now than during most of the pandemic TOP TIP There’s no evidence it causes more severe disease than the original Omicron, which has been associated with milder illness than previous variants like Delta, she added. Read more here. No one could have predicted before the pandemic that a little piece of white paper would hold so much significance, Megan Marples reports. It’s the key to entering some concert venues, traveling to certain countries and more. Testing, especially as the Omicron-fueled wave subsides, is as important as ever, experts caution. “Testing is how we see the virus. We can’t see it if we do not test,” said epidemiologist Dr. Michael Mina. TODAY’S PODCAST Love isn’t just romantic dinners and moonlit walks; it’s also a survival mechanism just like hunger and thirst. On this week’s podcast, CNN’s Chief Medical Correspondent Dr. Sanjay Gupta explores the science behind falling in love and shares one expert’s tips on keeping love alive during the pandemic. Listen Now.