In global COVID-19 developments, Brazil passed the 4-million-case mark, and World Health Organization (WHO) officials said more developed countries have joined the COVAX initiative, a promising sign for a tool designed to support vaccine development and allocate doses fairly.The global total today climbed to 26,427,137 cases, and 870,948 people have died from their infections, according to the Johns Hopkins online dashboard.Encouraging COVAX enrollmentAt a WHO media briefing today, Director-General Tedros Adhanom Ghebreyesus, PhD, said that agency is pleased that 78 high- and upper-middle income countries have confirmed their participation in the COVAX Facility and that the number is growing.