Story highlights 24 patients have died in South Korea's MERS outbreak

One more case announced Friday, bringing the total number to 166

Seoul, South Korea (CNN) South Korean officials announced one more death in the country's MERS outbreak Friday, raising the total death toll to 24.

One new case of Middle East Respiratory Syndrome (MERS) was also announced, bringing the total number to 166, according to South Korea's Ministry of Health.

The number of people under quarantine in South Korea, both in their own homes or in quarantine facilities, declined from 6,729 to 5,930

The World Health Organization described the MERS outbreak as a "wakeup call," showing that outbreaks can happen anywhere.

The WHO has said that the number of new cases "appears to be declining" -- indicating that the outbreak could be slowing down. But it also warned that "all outbreaks are unpredictable" -- especially for new diseases that are not well understood.

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