Question: What unlying health conditions increase the risk of severe illness from COVID-19?

Answer passage (source: Australia):
page_title: Coronavirus (COVID-19) advice for people with chronic health conditions
section_headers: Conditions that increase the risk of serious illness from COVID-19
section_content: Anyone could develop serious or severe illness from COVID-19, but those with
chronic health conditions or weakened immune systems are at greater risk.
If you are working and you have a chronic condition or your immune system is
compromised, talk to your employer or workplace about having a risk
assessment.
Chronic conditions that put you at greater risk
These conditions increase your risk if you are aged over 65, or if you are an
Aboriginal or Torres Strait Islander person aged over 50:

chronic renal failure
coronary heart disease
congestive cardiac failure
chronic lung disease such as severe asthma, cystic fibrosis, bronchiectasis, suppurative lung disease, chronic obstructive pulmonary disease or chronic emphysema
poorly controlled diabetes
poorly controlled hypertension

Immune system conditions that put you at greater risk
You are at increased risk at any age if your immune system is significantly
weakened:

due to haematologic neoplasms such as leukaemias, lymphomas and myelodysplastic syndromes
post-transplant, if you have had a solid organ transplant and are on immunosuppressive therapy
post-transplant, if you have had a haematopoietic stem cell transplant in the last 24 months or are on treatment for graft versus host disease (GVHD)
by primary or acquired immunodeficiency including HIV infection
by having chemotherapy or radiotherapy

Medical treatments that put you at greater risk
You are also at increased risk if you take any biological disease-modifying
anti-rheumatic drug (bDMARD) or any of the following immunosuppressive drugs:

azathioprine, more than 3mg per kg per day
6-mercaptopurine, more than 1.5mg per kg per day
methotrexate, more than 0.4mg per kg per week
high-dose corticosteroids (20mg or more of prednisone per day or equivalent) for 14 days or more
tacrolimus
cyclosporine
cyclophosphamide
mycophenolate
any combination of these or other DMARDs

Disease-modifying anti-rheumatic drugs (DMARDs) are used to treat inflammatory
forms of arthritis. They suppress the immune system and this slows the
development of the arthritis.
Some DMARDS have a broad effect on the immune system while the biological
DMARDS target specific parts of the immune system.

Reviewer feedback on this answer:
Extensive list of health conditions that can put you risk for covid which is what is being asked. Also includes immune system conditions and medical treatments that can put you at risk. This is a fantastic and very detailed response!
This is a direct answer to the question. The answer provides comprehensive information and list on various underlying health conditions that can increase a person's risk of severe illness from Covid-19.

Reviewer ratings:
Excellent
Excellent

Answer passage (source: Australia):
page_title: What you need to know about coronavirus (COVID-19)
section_headers: Who is most at risk
section_content: In Australia, the people most at risk of getting the virus are:

travellers who have recently been overseas
those who have been in close contact with someone who has been diagnosed with COVID-19
people in correctional and detention facilities
people in group residential settings

People who are, or are more likely to be, at higher risk of serious illness if
they get the virus are:

Aboriginal and Torres Strait Islander people 50 years and older with one or more chronic medical conditions
people 65 years and older with chronic medical conditions
people 70 years and older
people with chronic conditions or compromised immune systems
people in aged care facilities
people with a disability

At this stage the risk to children and babies, and the role children play in
the transmission of COVID-19, is not clear. However, there has so far been a
low rate of confirmed COVID-19 cases among children, relative to the broader
population.
There is limited evidence at this time regarding the risk in pregnant women.
See our advice for people at risk.

Reviewer feedback on this answer:
This answer is irrelevant to the question. This answer contains information on groups of people who are considered as at high risk of serious illness if getting infected by Covid-19. It does not provide any information on what underlying conditions increase the risk of severe illness from Covid-19 as asked in the question.
fully and directly answers the question being asked, including two different levels of severity and provides further reading for the people who are at risk.

Reviewer ratings:
Bad
Excellent

Answer passage (source: Australia):
page_title: Coronavirus (COVID-19) advice for older people
section_headers: People most at risk
section_content: Your risk of serious illness from coronavirus increases if you are:

aged 70 years or over
aged 65 years or over and have a chronic medical condition
an Aboriginal and Torres Strait Islander person aged 50 years and over who has a chronic medical condition
immune suppressed

There is currently no cure or vaccine for coronavirus, or immunity in the
community, so you need to protect yourself.

Reviewer feedback on this answer:
Somewhat answers the question being asked (who is at risk) but doesn't answer the part about which health conditions put you at risk
This does not answer the question. The answer does not provide any information on underlying health condition that can increase the risk of severe illness from Covid-19. Instead, it provides information on groups of people who are at risk of serious illness from Covid-19.

Reviewer ratings:
Acceptable
Bad