Public Health Book, whole book, by: A WHO Collaborating Centre

In this informational/guidance book, a WHO Collaborating Centre explains proper guidance and gives valid information about world health issues/problems.
One  example that supports this main idea is that it educates the reader about chemical substances and how avoiding them is critical based on the harm they can do. Another example that supports this main idea is how the book talks about National functions and how important the nation knows it is to be fully aware of all chemical incidents to the population. Finally, the author gives the fact of how the WHO assesses issues and evaluates the impact on the health of the public to support the main idea.
These ideas are connected to the role of the WHO (world health organization) because they go into detail about how the World Health Organization is constantly working to protect the health of the public.