FWIW, I got it from the CIA World Factbook [1]. The UN [2] has a crude death rate of 7.1, leading to 136 deaths (of 7m) per day. It's all in the same ballpark.
To see whether it's abnormal or not, one would have to examine the age profile of the volunteers and crunch the numbers.
The uncritical reporting is quite disappointing. I mean, more than 1000 people died in New York in the week following the Indonesian election. Someone please look into that!!!!1!!1!
[1] https://www.cia.gov/library/publications/the-world-factbook/...
[2] https://www.un.org/en/development/desa/population/publicatio...