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The World Health Organization says every effort is now needed to contain the coronavirus disease, COVID-19. Some nations have well-developed plans for dealing with the outbreak of a new virus, others are just starting to catch up. Jane Halton, the former health secretary of Australia, and a past chair of WHO鈥檚 executive board says there鈥檚 a lot to be learned from models that simulate similar outbreaks.

Also: health officials have warned people not to touch their face, but that鈥檚 easier said than done; understanding personal versus collective responsibility around coronavirus; millions of kids are home from school and they have some thoughts to share; after being on lockdown, a California family stranded in China ventures outside; and three Mexican nurses have become heroes in the global fight against coronavirus, thanks to a video they made on the correct way to wash hands.

(From L) World Health Organization (WHO) Health Emergencies Programme Director Michael Ryan, WHO Director-General Tedros Adhanom Ghebreyesus and WHO Technical Lead Maria Van Kerkhove attend a daily press briefing on COVID-19, the disease caused by the novel coronavirus, at the WHO headquarters in Geneva. Credit: Fabrice Coffrini/Getty Images)