For several days now, Serbia has recorded around 1,500 new COVID-19 infections every day. 

Medical experts admit the country has entered the fourth wave of the pandemic. According to them, most of the people catching the coronavirus had vacationed abroad. 

Some 92 percent of currently hospitalized patients are not vaccinated and 80 percent of them are male. Zoran Bekic, head of the Belgrade Fair Vaccination Center, says the prospects are far from bright.

"In the Republic of Serbia, around 50 percent of adults are vaccinated, and that's not enough. A collective immunity is not reached yet. That's why the number of newly infected rose 10 times in the past three weeks," he said.

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Did dragons really exist?

Just a few months ago, hundreds of people were queueing at the largest vaccination center at the Belgrade Fair. 

Then, three fair halls were booked and packed with vaccination booths. Now, the center has shrunk to just one small hall, which is eerily empty. 

Six months from the beginning of the vaccination program, Serbia has rolled out booster shots for those already fully vaccinated against COVID-19  to try to tackle the problem.

The aim is to boost the immunity of those already vaccinated and give them extra protection. But when we came to the vaccination center, it was clear the turnout is not as expected. It was predominantly health workers, the elderly and those most vulnerable with chronic illnesses who were there.

Belgrade lawyer Milutin Karabasic, who CGTN talked to while he was waiting for his third jab, is one of only a few people who accepted an invitation. He elected to receive the Sinopharm vaccine, as every adult Serbian citizen can take any of the four available jabs: Sinopharm, Sputnik V, AstraZeneca and Pfizer-BioNTech.

"The Chinese vaccine is made traditionally. That's why I've decided to take the third dose. It is something I'd recommend to all so we can get out of this pandemic as quickly as possible," Karabasic explained.

While he was getting his third shot, hardly anyone wore a mask in Belgrade's streets and public places. Physical distancing rules are mostly a thing of the past and an initially rapid vaccination roll-out has almost ground to a halt.

It seems people here are weary of the pandemic and everything that goes with it.