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President Joe Biden’s Covid-19 Response Team plans to hold a press conference on Friday while a massive winter storm has closed vaccine dispensaries and delayed shipments to the United States

The Chief Medical Officer of the White House, Dr. Anthony Fauci, warned Thursday that the power outages and winter storm in Texas are a “significant” problem for Covid-19 vaccine distribution this week. The Biden government has announced a number of moves in recent weeks to increase vaccine intake, such as shipping cans directly to retail pharmacies and community health centers.

“We just have to make up for it as soon as the weather subsides a bit, the ice melts and we can get the trucks and the people out,” said Fauci during an interview with MSNBC’s Andrea Mitchell.

FedEx and UPS package centers in the Midwest were also hit by the storm, delaying vaccine shipments across the country.

The delay comes because the country’s leading health authorities, including Fauci and the director of the Centers for Disease Control and Prevention, Dr. Rochelle Walensky, calling on Americans to contain the spread of the virus so that the US can give vaccines before highly contagious variants make the pandemic worse.

Read CNBC’s live updates for the latest news on the Covid-19 outbreak.

– CNBC’s Berkeley Lovelace Jr. contributed to this report.