According to a report from UNICEF, which analysed 115 million confirmed COVID-19 cases from 105 countries, people under 20 account for 16 percent of reported Covid-19 cases.
Now more than 100 countries around the world have extended their COVID-19 vaccination drive to children.
The three vaccines that have been approved by the World Health Organization (WHO) are the Pfizer-BioNTech vaccine, the Sinopharm shot and the Sinovac vaccine.
While some countries are giving children and adolescents the full two-dose course of the Pfizer-BioNTech vaccine, others are giving a single dose.
According to the London School of Hygiene & Tropical Medicine, there are 20 vaccine candidates in clinical testing for those under 18.
The European Union’s health regulator, the European Medicines Agency (EMA), in May approved the use of the Pfizer-BioNTech vaccine for use in children over the age of 12.
In Germany, as of November 23, some 45 percent of the 12 to 17 age group had been fully vaccinated with the Pfizer-BioNTech vaccine.
In Norway, which is not part of the EU, the Pfizer-BioNTech vaccine has been approved for those aged 12 to 15. But health authorities have paused the rollout of second doses, partly due to a rare side effect linked to heart inflammation.
In the United Kingdom, which is not part of the EU, 12 to 15 year olds are being offered a single Pfizer-BioNTech jab.
The EU regulator is evaluating an application to extend the use of the vaccine to children aged five to 11. It is expected to make an announcement next month.
In September, Cuba began rolling out vaccines for children as young as two years old, with the domestically produced Soberana-02 and Soberana Plus vaccines.
In Venezuela, authorities announced in early November that vaccinations were under way for children as young as two years old, using the Cuban Soberana-02 shot.
Brazil’s health regulator Anvisa has approved the use of the Pfizer-BioNTech vaccine in children from age 12 to 17 and the government has encouraged local authorities to prioritise those children and adolescents with comorbidities.
The United Arab Emirates began its vaccination drive in August in children aged three to 11 with the Sinopharm vaccine. In November, Emirati authorities approved the Pfizer-BioNTech vaccine for children between five and 11.
In October, Bahrain authorised the use of the Sinopharm shot for children ages three to 11. This month, it approved the use of the Pfizer-BioNTech for children aged five to 11.
In May, US health authorities approved the Pfizer-BioNTech vaccine for use in children from the ages of five to 17.
Since the beginning of the pandemic, children represented 16.9 percent of all confirmed cases, according to the American Academy of Pediatrics. In the week ending November 18, children made up 25.1 percent of reported cases. Children make up 22.2 percent of the US population.