Question: What happens if I get symptoms of coronavirus again after testing positive previously?

Answer passage (source: UK):
page_title: Guidance Stay at home: guidance for households with possible or confirmed coronavirus (COVID-19) infection
section_headers: After ending self-isolation and/or household isolation
section_content: What to do if you have another episode of coronavirus (COVID-19) symptoms
after the end of your first period of self-isolation or household isolation
If you develop new coronavirus (COVID-19) symptoms at any point after ending
your first period of staying at home (self-isolation or household isolation)
then you must follow the same guidance on self-
isolation again.
This means you must stay at home for at least 7 days from when your symptoms
started if you live alone and arrange to have a test. If you live in a
household, you must stay at home for at least 7 days from when your symptoms
started, arrange a test for yourself, and all other household members must
stay at home for 14 days.
This will help to ensure that you are continuing to protect others within your
household and in your community by minimising the amount of infection that is
passed on.
If you previously tested positive for coronavirus (COVID-19) and have
another episode of symptoms, do you need to self-isolate again?
If you have tested positive for coronavirus (COVID-19), you will probably have
developed some immunity to the disease. But it cannot be guaranteed that will
happen in all cases, nor exactly for how long that will last.
If you have previously tested positive but develop symptoms again, you must
self-isolate for at least 7 days from onset of symptoms and be tested. If you
live in a household, all other household members must stay at home for 14
days.
If you are concerned about your new possible coronavirus (COVID-19) symptoms,
use the NHS 111 online coronavirus (COVID-19) service.
If you do not have internet access, call NHS 111. For a medical emergency dial
999.

Reviewer feedback on this answer:
Answer is very detailed regarding self-isolation and for how long as well as for the requester to get retested if they think they have COVID-19 symptoms again.
Offers detailed guidance about what to do if you are reinfected and who to contact.

Reviewer ratings:
Excellent
Excellent

Answer passage (source: UK):
page_title: Guidance Guidance for households with grandparents, parents and children living together where someone is at increased risk or has symptoms of coronavirus (COVID-19) infection
section_headers: Symptoms
section_content: The most important symptoms of coronavirus (COVID-19) are recent onset of any
of the following:

a new continuous cough
a high temperature
a loss of, or change in, your normal sense of taste or smell (anosmia)

For most people coronavirus (COVID-19) will be a mild illness. However, if you
have any of the symptoms above you should self-isolate at home.

Reviewer feedback on this answer:
Answer does not refer to getting COVID-19 a second time but does advise the requester to self-isolate if they have symptoms.
This is a list of symptoms with no information about what to do if you are reinfected.

Reviewer ratings:
Acceptable
Bad

Answer passage (source: UK):
page_title: Guidance Guidance on shielding and protecting people who are clinically extremely vulnerable from COVID-19
section_headers: Symptoms of coronavirus (COVID-19)
section_content: The most important symptoms of coronavirus (COVID-19) are recent onset of any
of the following:

a new continuous cough
a high temperature
a loss of, or change in, your normal sense of taste or smell (anosmia)

If you have any of the symptoms above you should self-isolate at
home.

Reviewer feedback on this answer:
Answer lets requester know that they should self-isolate at home and gives them a link with tips to do so assuming they haven't already gone through this and don't know what to do.
This offers a list of symptoms to watch for and doesn't address reinfection.

Reviewer ratings:
Acceptable
Bad