HARARE, Zimbabwe — Civil servants stung by Zimbabwe’s galloping inflation staged a one-day strike on Wednesday in a demand for increased wages, saying that their earnings were disappearing under skyrocketing prices.

Inflation in the southern African nation is running at about 300 percent, according to International Monetary Fund figures, and has prompted walkouts by doctors and nurses as well.

“We need increased salaries to be able to keep coming to work,” said Charles Mubwandarikwa , chairman of the Progressive Teachers Union of Zimbabwe, which joined the government workers’ strike in solidarity.

Zimbabwean doctors, many of whom have been on strike for about two months, are demanding that their wages not only be increased, but that they be paid in American dollars as a hedge against inflation.