No, they can't combine like that. But irregularly treated TB can become resistant to the most useful antibiotics which in turn makes the case extremely difficul

No, they can't combine like that. But irregularly treated TB can become resistant to the most useful antibiotics which in turn makes the case extremely difficult to treat (sometimes years). There are individuals who have TB untreatable by currently known means, even failing surgical approaches. They are rare but they exist. The COVID co-infection may make her more subject to more significant pulmonary complications but what this means in terms of variants isn't clear. Source: public health TB physician