SAO PAULO, March 15 (CNA) - Brazilian President Jair Bolsonaro on Monday (Mar 15) picked his fourth health minister since the COVID-19 pandemic hit, amid the worst throes of the disease in the country yet and after a series of errors decried by public health experts.

Marcelo Queiroga, the president of the Brazilian Society of Cardiology, will replace Eduardo Pazuello, an active-duty army general with expertise in logistics who landed the position last May despite having no prior health experience.

Earlier on Monday, Pazuello acknowledged in a press conference that Bolsonaro aimed to replace him. The first candidate for the job, cardiologist Ludhmila Hajjar, rejected it.

Pazuello’s departure means ushering in Brazil’s fourth health minister during the pandemic, although he has presided over the ministry for the longest period of the three to date.

The revolving door signals the challenges for the government of Latin America’s largest nation to implement effective measures to control the virus’ spread - or even agree on which measures are necessary.

Pazuello’s two predecessors left the position amid disagreements with Bolsonaro, who criticised broad social distancing and supported the use of an unproven anti-malarial drug to treat the disease. He continues to hold those positions, despite health experts’ admonishments and studies showing the drug has no effect on COVID-19.

Pazuello proved more compliant. Immediately after taking the job, his ministry backed the use and distribution of the malaria pill. On several occasions, he said that his boss tells him what to do, and he obeys.

Brazil has recorded almost 280,000 deaths from COVID-19, almost all of which were on Pazuello’s watch. The toll has been worsening lately, with the nation currently averaging more than 1,800 deaths each day.

Healthcare systems of major cities are at the brink of collapse, and lawmakers allied with Bolsonaro have proposed suitable replacements for Pazuello, while threatening to step up pressure for an investigation into his handling of the crisis.

The country’s top court is also investigating Pazuello for alleged neglect that contributed to the collapse of the healthcare system in Amazonas state earlier this year. That probe will now be sent to a low court judge.

Weeks later, in a particularly embarrassing episode, his ministry accidentally dispatched a shipment of vaccines intended for Amazonas state to neighbouring Amapa state, and vice versa, after confusing the abbreviations for each state.

Finally, Pazuello has faced intense criticism for Brazil’s slow vaccine roll-out. According to Our World in Data, an online research site that compares official government statistics, only 5.4 per cent of Brazilians have been vaccinated. Almost all were shots from Chinese biopharmaceutical firm Sinovac, which Bolsonaro repeatedly cast doubt upon.

Pazuello’s health ministry also delayed its decision to purchase the vaccine from Sao Paulo state’s government until it was left with no other option to start immunisation in January.

The only vaccine deal Pazuello had signed at the time, for 100 million doses of the AstraZeneca jab, has brought few shots to the arms of Brazilians so far. His ministry has since scrambled to cobble together agreements with other suppliers, recently concluding deals to acquire the Pfizer and Sputnik V shots.