A winter storm in the southern U.S. caused shipments of the COVID-19 vaccine bound for St. Louis County to be delayed, so health officials were forced to cancel several hundred vaccination appointments. 

St. Louis County Public Health on Tuesday said three vaccination clinics scheduled for Wednesday and Thursday have been canceled, which affects "several hundred people" who were set to get their first dose of the Moderna vaccine. 

Anyone whose appointment was affected has been notified by email and will be sent a follow-up email to reschedule once the county gets confirmation that the vaccine doses have been delivered. 

The shipment delay is expected to be one to two days. 

Officials are hopeful that vaccine appointments scheduled with the county for later in the week won't be impacted. And if you have an appointment later this week and haven't gotten an email about it being canceled, you "can assume" your appointment is still happening.

No appointments for people receiving their second dose have been affected, the county notes. 

The county says it is adjusting staffing so more workers are available later this week when the delayed doses arrive so they can get people vaccinated. 

St. Louis County Public Health is still working on vaccinating those in Priority 1A, as well as teachers and childcare providers. Those eligible to get the vaccine through the county will be contacted by their employer or the public health department. 

No walk-in appointments are available at the county's vaccination clinics.