I’m copying this post over that I made on a another thread, hoping it will give you some peace of mind, or at least, clarity about ‘at risk’ conditions. My DD is an ‘extremely vulnerable’ and sees a haematologist/oncologist (and an immunologist and a rheumatologist 😬), so I empathise with your concern:
There are two groups of people thought to be more at risk, a wider vulnerable group (includes elderly people) and the 1.5m extremely vulnerable people who got a letter in the post.
The following lists are copy and pasted from the .gov website.
Group 1
We are advising those who are at increased risk of severe illness from coronavirus (COVID-19) to be particularly stringent in following social distancing measures.
This group includes those who are:
aged 70 or older (regardless of medical conditions)
under 70 with an underlying health condition listed below (ie anyone instructed to get a flu jab as an adult each year on medical grounds):
chronic (long-term) respiratory diseases, such as asthma, chronic obstructive pulmonary disease (COPD), emphysema or bronchitis
chronic heart disease, such as heart failure
chronic kidney disease
chronic liver disease, such as hepatitis
chronic neurological conditions, such as Parkinson’s disease, motor neurone disease, multiple sclerosis (MS), a learning disability or cerebral palsy
diabetes
problems with your spleen – for example, sickle cell disease or if you have had your spleen removed
a weakened immune system as the result of conditions such as HIV and AIDS, or medicines such as steroid tablets or chemotherapy
being seriously overweight (a body mass index (BMI) of 40 or above)
those who are pregnant
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Group 2:
This guidance is for people, including children, who are at very high risk of severe illness from coronavirus (COVID-19) because of an underlying health condition, and for their family, friends and carers. It is intended for use in situations where the extremely vulnerable person is living in their own home, with or without additional support. This includes the extremely clinically vulnerable people living in long-term care facilities, either for the elderly or persons with special needs.
Shielding is a measure to protect people who are clinically extremely vulnerable by minimising all interaction between those who are extremely vulnerable and others. We are strongly advising people with serious underlying health conditions (listed below), which put them at very high risk of severe illness from coronavirus (COVID-19), to rigorously follow shielding measures in order to keep themselves safe.
What do we mean by extremely vulnerable?
People falling into this extremely vulnerable group include:
Solid organ transplant recipients.
People with specific cancers:
people with cancer who are undergoing active chemotherapy
people with lung cancer who are undergoing radical radiotherapy
people with cancers of the blood or bone marrow such as leukaemia, lymphoma or myeloma who are at any stage of treatment
people having immunotherapy or other continuing antibody treatments for cancer
people having other targeted cancer treatments which can affect the immune system, such as protein kinase inhibitors or PARP inhibitors
people who have had bone marrow or stem cell transplants in the last 6 months, or who are still taking immunosuppression drugs
People with severe respiratory conditions including all cystic fibrosis, severe asthma and severe COPD.
People with rare diseases and inborn errors of metabolism that significantly increase the risk of infections (such as SCID, homozygous sickle cell).
People on immunosuppression therapies sufficient to significantly increase risk of infection.
Women who are pregnant with significant heart disease, congenital or acquired.
(Group 1 info here: www.gov.uk/government/publications/covid-19-guidance-on-social-distancing-and-for-vulnerable-people/guidance-on-social-distancing-for-everyone-in-the-uk-and-protecting-older-people-and-vulnerable-adults )
(Group 2 info here: www.gov.uk/government/publications/guidance-on-shielding-and-protecting-extremely-vulnerable-persons-from-covid-19/guidance-on-shielding-and-protecting-extremely-vulnerable-persons-from-covid-19#what-do-we-mean-by-extremely-vulnerable )