Now Playing: ‘The worst is over if we continue to be smart’: Gov. Cuomo
Now Playing: Coronavirus, Easter and tornado: World in Photos, April 13
Now Playing: Inmates at prisons and jails face growing virus threat
Now Playing: Fauci addresses previous comment about timing of shutdown orders
Now Playing: More than 10,000 New Yorkers dead due to coronavirus
Now Playing: Why are some parts of the US facing a PPE shortage?
Now Playing: PPE shortage: How did it happen?
Now Playing: Trump shares campaign-style montage praising his handling of coronavirus outbreak
Now Playing: Fauci tries to clarify his answer to a ‘hypothetical question’ about ‘saved lives’
Now Playing: Here are the coronavirus symptoms you should be aware of
Now Playing: Latest coronavirus developments we’re watching
Now Playing: All but 8 states have issued a stay-at-home order to combat COVID-19
Now Playing: Can the economy recover in parts of the country as early as next month?
Now Playing: The new normal: Mask etiquette to prevent coronavirus
Now Playing: Wayne Brady on redefining parenting and relationships during the coronavirus pandemic
Now Playing: More answers to your COVID-19 questions
Now Playing: A nurse travelled to help fight the coronavirus pandemic
Now Playing: This hospital plays ‘Don’t Stop Believin’ every time a COVID-19 patient is discharged
Now Playing: 6-year-old boy with cystic fibrosis says he beat COVID-19