The World Health Organization's emergency committee said Monday it was against international travelers being required to have proof of vaccination, partly on grounds that  such a measure would deepen inequities.

A health worker sprays disinfectant against the spread of COVID-19 in the streets of the Andean city of Puno, Peru, close to the border with Bolivia, on Monday. Photo: VCG

"Do not require proof of vaccination as a condition of entry, given the limited [although growing] evidence about the performance of vaccines in reducing transmission and the persistent inequity in the global vaccine distribution," the committee said in a statement summarizing its April 15 meeting, the results of which were only published on Monday.

"States Parties are strongly encouraged to acknowledge the potential for requirements of proof of vaccination to deepen inequities and promote differential freedom of movement," the committee added.

The group's recommendation comes as numerous countries are mulling launching vaccine passports for travelers but also for other activities including sports. The idea, however, has met with criticism, with many saying it would lead to discrimination between young and old as well as rich and poor. Some have also raised privacy concerns.

European Union member states have already agreed on vaccine certificates, China has launched a health certificate program for travelers and airline companies are also considering requiring vaccination proof.

The US for its part said earlier in April that it would not require vaccination passports.