South Korea has reported another daily record of 1,842 coronavirus cases, as it struggles to tame its worst-ever wave of outbreaks amid rising infections nationwide fuelled by the more contagious Delta variant, reports Reuters.

The latest numbers include 270 sailors on an anti-piracy navy destroyer patrolling the waters off Africa who were flown home on Tuesday after being infected with Covid-19.

Authorities are considering expanding the restrictions imposed for the capital Seoul and neighbouring areas last week, as small clusters continue to emerge nationwide.

South Korea's total infections rose to 184,103 cases with 2,063 deaths, Korea Disease Control and Prevention Agency data shows.