A number of countries were being driven by young people "letting down their guard" GENEVA: The World Health Organization warned Thursday that spikes in coronavirus transmission in a number of countries were being driven by young people "letting down their guard". "Young people are not invincible," WHO chief Tedros Adhanom Ghebreyesus told a virtual news conference in Geneva, stressing that "Young people can get infected and young people can die... Young people must take the same precautions."