https://www.scientificamerican.com/article/who-will-get-a-covid-19-vaccine-first-access-plans-are-taking-shape/ > Whether it takes weeks, as US President Donald Trump has hinted, or months, as most health-care experts expect, an approved vaccine against the coronavirus is coming, and it's hotly anticipated. Still, it will initially be in short supply while manufacturers scale up production. As the pandemic continues to put millions at risk daily, including health-care workers, older people and those with pre-existing diseases, who should get vaccinated first? > This week, a strategic advisory group at the World Health Organization (WHO) weighed in with preliminary guidance for global vaccine allocation, identifying groups that should be prioritized. These recommendations join a draft plan from a panel assembled by the US National Academies of Sciences, Engineering, and Medicine (NASEM), released earlier this month.