疫疠

mín guó shí qī yóu yú tiān zāi rén huò zhàn luàn pín fán dǎo zhì yì lì pín réng

民国时期由于天灾人祸，战乱频繁，导致疫疠频仍。

Natural disasters, frequent wars during the period of The republic of China, these reasons caused epidemic happened frequently.