Vaccine for coronavirus may not be available until the end of the year..

The General Secretary of the World Health Organization has expressed concerns about the impact of a coronavirus outbreak in countries with weaker healthcare systems.

Tedros Adhanom Ghebreyesus, Director General of the World Health Organization (WHO). Source: Keystone

His comments come at a time when some experts are predicting that a vaccine to combat the coronavirus now called COVID-19 may not be available until the end of the year.