Although 16th century science could not explain the phenomenon, Harriot noticed that each town the colonists visited quickly suffered a deadly epidemic, which may have been influenza or smallpox. Some of the Secotan suspected the disease was caused by supernatural forces unleashed by the English. When Wingina fell sick, his own people could not treat him, but he recovered after requesting prayers from the English. Impressed, Wingina asked the colonists to share this power with other stricken communities, which only hastened the spread of disease. The epidemic likely had a severe impact on the fall harvest, at a time when Lane's colony would be heavily dependent on its neighbours to supplement its limited food supply.