KIM HARRISBERG ZOLELWA Sifumba described the daily injection she got to treat tuberculosis as feeling like hot lava being pumped slowly into her body, leaving the young South African doctor with crippling joint pain and incessant nausea. She thought her 18-month fight against multidrug-resistant tuberculosis was a career low-point until - five years on - she fell ill with COVID-19 and acute anxiety while working on the pandemic frontlines with scant protective equipment and support. "I'm tired of almost dying all the time," said Sifumba, 29, who blogs and campaigns on doctors' health issues, speaking from the Durban psychiatric hospital…