Hello and welcome to HCM,
AFB positivity is a confirmatory test for tuberculosis
The treatment for tuberculosis is long and consists of a number of medicines. So, a confirmatory test is needed to start with the treatment.
Yes you can go for work while the results are awaited.
There is an equivocal possibility of the sputum being positive.
It is best to wait for the results.
Thanks and take care care.
Dr Shailja P Wahal