World Health Organization: https://www.who.int/emergencies/diseases/novel-coronavirus-2019
The WHO is the world's leading and authoritative public health organization. Key resources from the WHO addressing the COVID-19 outbreak include:
Intergovernmental Organization Search Engine:
This is a Google Custom Search Engine that only searches Intergovernmental Organization websites, such as the World Health Organization, the World Bank, the United Nations, etc...
For individual country responses to the COVID-19 outbreak, it is best to search for the desired country's Ministry of Health, Department of Health, or whatever term an individual country uses for its department of public health. Every country should have status updates and reports in local languages that document their response to the outbreak and advice for citizens and travelers. Information on the Kingdom of Saudi Arabia can be found under the "Local" tab at the top of this page.
Some of the largest countries and organizations detailing their responses and providing public research information are:
United States & Canada: