Brent crude oil futures were down 20 cents, or 0.4%, at $49.05 a barrel, while West Texas Intermediate oil futures fell 20 cents, or 0.4%, to $46.06 a barrel, CNBC reported. Both benchmarks gained for a fifth consecutive week last week.
“Crude pared earlier vaccine roll-out gains after Los Angeles county had another record high in coronavirus cases and South Korea raised their alert level,” said Edward Moya, senior market analyst at OANDA.
“Covid restrictive measures and lockdowns across the globe seem poised to keep crude prices heavy in the short term.” The restrictions in California call for bars, hair and nail salons and tattoo shops to close again.
The southern German region of Bavaria announced on Sunday it would impose a tougher lockdown from Wednesday until Jan. 5, while South Korean authorities heightened social distancing rules for the capital Seoul and surrounding areas that would last until at least the end of the month.
Also weighing on prices, US energy firms last week added oil and natural gas rigs for the 11th time in 12 weeks as producers return to the wellpad even as most are cutting spending this year and next.
Iran, meanwhile, has instructed its oil ministry to prepare installations for production and sale of crude oil at full capacity within three months, state media said on Sunday.