The festival, considered Intangible Heritage by UNESCO, stems from the South American country's indigenous, Spanish and African traditions.
Despite its name, which invokes the ritual of wearing black and white clothing to symbolize unity and equality, the carnival combines vibrant colors and music to celebrate ethnic and cultural diversity.
One of its traditions involves carnival-goers teasing each other by throwing talcum powder and foam.
However, in an effort to thwart the spread of COVID-19, authorities asked carnival visitors to show proof of vaccination, wear masks and avoid close contact with other participants.
Carnival events have been scheduled since the December 28 and will end on January 10.