Question: What is the length of closure before workers can go back to work?

Answer passage (source: CDC):
page_title: Frequently Asked Questions
section_headers: Cleaning and Disinfection
How long do companies need to close for disinfection after an exposure? How long before other workers can come back to work?
section_content: Companies do not necessarily need to close after a person with confirmed or
suspected COVID-19 has been in a company facility. The area(s) used or visited
by the ill person should be closed for 24 hours or as long as possible. Open
outside doors and windows as much as possible ensuring that doing so does not
pose a safety risk to children using the facility (i.e. make sure that
children are not able to enter the closed off area through any windows or
doors). and use ventilating fans to increase air circulation in the area. Once
the area has been appropriately
disinfected, it can be opened for use. Workers without close contact with
the person with confirmed or suspected COVID-19 can return to work immediately
after disinfection is completed.

Reviewer feedback on this answer:
They didn't give a specific time when people would be able to go back to work. They gave different examples because not every situation is the same.
While the answer is slightly related, it does not answer the question on when workers should return to work.

Reviewer ratings:
Excellent
Could be Improved

Answer passage (source: CDC):
page_title: Institutes of Higher Education
section_headers: Dismissals
How long should colleges or universities be dismissed?
section_content: It depends on the situation at your school and community. You may need to
temporarily dismiss school for 2-5 days, if someone with COVID-19 was on
campus. This initial short-term dismissal allows time for the local health
officials to gain a better understanding of the COVID-19 situation impacting
the school and for custodial staff to clean and disinfect the affected
facilities. The need for an extended dismissal will be made based on what
officials discover from contact tracing.
If there is substantial transmission in the local community, local health
officials may suggest extended school dismissals. This longer-term, and likely
broader-reaching, dismissal strategy is intended to slow transmission rates of
COVID-19 in the community.

Reviewer feedback on this answer:
The answer is for school dismissal, not about returning to work.
The question was about when workers would be able to go back to work. The bot talked about school and that wasn't what the question was asking.

Reviewer ratings:
Bad
Bad

Answer passage (source: CDC):
page_title: General Business Frequently Asked Questions
section_headers: Cleaning and Disinfection in the Workplace
If I shut down my facility as a result of a COVID-19 case or outbreak, what is the recommended way to clean and disinfect, and what is the appropriate timeframe to resume operations?
section_content: 
Follow CDC guidance for cleaning and disinfection.
Wait 24 hours before cleaning and disinfecting to minimize potential for exposure to respiratory droplets. If 24 hours is not feasible, wait as long as possible.
Open outside doors and windows to increase air circulation in the area.

Cleaning staff should clean and disinfect all areas including offices,
bathrooms, and common areas, focusing especially on frequently touched
surfaces.

Clean dirty surfaces with soap and water prior to disinfection.
Next, disinfect surfaces using products that meet EPA’s criteria for use against SARS-Cov-2external iconexternal icon, the virus that causes COVID-19, and that are appropriate for the surface.
Follow the manufacturer’s instructions for all cleaning and disinfection products for concentration, application method, contact time, and required PPE.

Operations can resume as soon as the cleaning and disinfection are completed.

Reviewer feedback on this answer:
I would say this answer is excellent because depending on the situation it could take a few days or a few weeks. They didn't give a exact time frame they just said it depends on how long it takes to clean.
The answer does not address the question, it only talks about properly disinfecting a space.

Reviewer ratings:
Excellent
Bad