Question: How long does a company need to close for cleaning if a worker has been diagnosed with Covid 19?

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:
Answer is clear and easy to understand. It seems to make good sense. I like the idea that areas have to be controlled and it's noted here.
The answer gives a time frame of how long the area should be closed for.  It also states that the business doesn't necessarily have to be closed.

Reviewer ratings:
Excellent
Excellent

Answer passage (source: CDC):
page_title: General Business Frequently Asked Questions
section_headers: Cleaning and Disinfection in the Workplace
In addition to cleaning and disinfecting, what can I do to decrease the spread of disease in my workplace?
section_content: Employers can also:

Provide tissues and no-touch disposal receptacles.
Provide soap and water in the workplace. If soap and water are not readily available, use alcohol-based hand sanitizer that contains at least 60% alcohol. If hands are visibly dirty, soap and water should be chosen over hand sanitizer.
Place hand sanitizer in multiple locations to encourage good hand hygiene practices.
Place posters that encourage staying home when sick, the importance of hand hygiene, and coughing and sneezing etiquette at the entrance to your workplace and in other workplace areas where employees are likely to see them.
Discourage handshaking


Reviewer feedback on this answer:
Employers can also?  What does that mean. It ignores the question, It's worse than bad, it ignores the whole question.
This answer is giving information on preventive measures.  The question is asking how long the place should be shut down.

Reviewer ratings:
Bad
Bad

Answer passage (source: CDC):
page_title: General Business Frequently Asked Questions
section_headers: Cleaning and Disinfection in the Workplace
How can I safely use cleaning chemicals?
section_content: Follow safe work practices when using cleaning chemicalspdf iconpdf
icon:

Always wear gloves appropriate for the chemicals being used when you are cleaning and disinfecting. Additional personal protective equipment (PPE) may be needed based on the setting and product you are using.
Never mix household bleach with ammonia or any other cleaner.
Make sure that employees know which cleaning chemicals must be diluted and how to correctly dilute the cleaners they are using.
Employers must ensure workers are trained on the hazards of the cleaning chemicals used in the workplace in accordance with OSHA’s Hazard Communication standard (29 CFR 1910.1200external iconexternal icon).
Follow the manufacturer’s instructions for all cleaning and disinfection products for concentration, application method, and contact time.


Reviewer feedback on this answer:
The question isn't about cleaning procedures without an infection/etc. The answer ignores the question. It needs to give detail on what to do in case of.... not just "because".  This is one that should be tossed.
This answer is about preventative measures.  The question is asking how long a business should be shut down after a worker tests positive.

Reviewer ratings:
Bad
Bad