(Reuters) – The U.S. Centers for Disease Control and Prevention recommended that everyone over 18 should receive a booster shot six months following their first vaccination. Pfizer (NYSE:) Moderna (NASDAQ:) vaccine doses or two months after their Johnson & Johnson (NYSE:) shot.

U.S. Health regulators expanded eligibility for COVID-19 vaccination booster shots last week to all adults. However, they did not recommend that everyone aged 18-49 should receive the shots.

On Monday, the World Health Organization (WHO), stated that Omicron coronavirus, which was discovered in Southern Africa for the first time, posed a high risk of developing new infections.

This variant is now confirmed in Australia and Canada, Botswana (Belgium), Botswana (Britain), Denmark, Germany Hong Kong, Israel, Italy, France, South Africa, South Africa, South Africa, Botswana, Botswana and Canada.

Rochelle Walensky, CDC Director, stated in a statement that the Omicron variant’s recent emergence (B.1.1.529) underscores the need for boosters and vaccinations to prevent COVID-19.

According to the CDC, scientists in America and all over the world urgently examine the vaccine’s effectiveness for this variant.

It also stated that 47 million people are still not vaccinated and encouraged them to do so as soon as they can.

These comments are similar to those made by Joe Biden (the U.S. president), who encouraged Americans get vaccinated and use boosters.

Biden stated that he believes that existing vaccines will continue to protect against serious disease. However, he added that his administration is working with vaccine manufacturers to create contingency plans in the event that new vaccines are needed.

According to the CDC, increased testing would be helpful in identifying the variants quickly.