AstraZeneca COVID-19 vaccine 90% effective at fighting coronavirus

AstraZeneca COVID-19 vaccine 90% effective at fighting coronavirus:

• AstraZeneca said its vaccine for COVID-19 could be around 90% effective, without any serious side effects.
• The vaccine was developed by Oxford University and was most effective when administered as a half dose followed by a full dose.
• The vaccine can also be refrigerated instead of needing to be frozen.