Photo taken on Jan. 22, 2021 shows vendors selling lemon in Thyolo, Malawi. Natural remedies have become one of the popular ways for treating COVID-19 infections among a growing number of Malawians. People are using a mixture of ginger, lemons and garlic as a remedy to boost the human immune system among many treatments. [Photo/Xinhua]

Photo taken on Jan. 22, 2021 shows people buying garlic in Thyolo, Malawi. Natural remedies have become one of the popular ways for treating COVID-19 infections among a growing number of Malawians. People are using a mixture of ginger, lemons and garlic as a remedy to boost the human immune system among many treatments. [Photo/Xinhua]

Photo taken on Jan. 22, 2021 shows people buying ginger in Thyolo, Malawi. Natural remedies have become one of the popular ways for treating COVID-19 infections among a growing number of Malawians. People are using a mixture of ginger, lemons and garlic as a remedy to boost the human immune system among many treatments. [Photo/Xinhua]