01:06Unexpected ElementsCovid in the sewersBBC World Service Duration: 59 minutes Sun 20th Mar 2022, 01:06 on BBC World Service Americas and the CaribbeanAvailable for over a yearListen nowCould novel forms of the virus be lurking in wastewater? Show more GenresFactualScience & NatureFormatsDiscussion & TalkBrandUnexpected Elements Source: BBC Online