Interestingly, there is some suggestion that there is some kind of bi-directional symbiotic relationship between tuberculosis and diabetes:
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5705893/
"TB can lead to impaired glucose tolerance (IGT) [
29,
30] and new onset diabetes [
9,
18,
29]. Generally, IGT normalizes after the TB has been successfully treated, but it remains a significant risk factor for developing type 2 diabetes in the future [
31]."
I found this very interesting as I developed TB myself in my early 30s following a car accident, and realised that the initial infection had lain dormant for around 15 years.
I had the BCG vaccination, and caught TB when I was around 18, obvious later on from looking at the symptoms I had at the time, but unfortunately masked by the BCG when the doctor did a Mantoux test for TB as a last resort - he didn't think I had it as he then relied on a spit test and the TB was already latent elsewhere in the body, so did not show up. After 8 months of treatment I gained a keen understanding of why it is so hard to get people to comply with the drug regimen, leading to drug resistant TB strains - it made me feel so exhausted I couldn't even make myself a cup of tea, and was wiped out for the length of the treatment - it was only when I was able to stop taking the drugs that I realised that it was the drugs that made me feel so bad.
I have just read through the side effects of the drug I was taking for the TB and realised that one of the side effects is hyperglycaemia - which pretty much matches my symptoms while taking it. Ironically I said to my husband that this March I felt the same as I did while on the TB treatment, and now I realise that was because I had very high blood sugars in March just before diagnosis...
I am not suggesting the vaccine is a problem, however the consultant said that it gave herd immunity at best and did not stop people developing TB, it just lessened the chances of catching it. That is probably why they don't routinely vaccinate teenagers now.
Hmm - food for thought...