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Wastewater samples taken during 2020 show that methamphetamine (ice) use plunged in Australia during the first COVID-19 lockdown while cannabis use spiked, according to a new study led by the University of South Australia.

Northern territoryUniversity of adelaideSouth australiaUniversity of south australiaCobus gerberEmily hendersonUniversity of queenslandUq queensland alliance for environmental health sciencesTechnology lettersEnvironmental scienceRelated drugs reporting systemSouth australiansStudy lead authorAssociate professorRichard badeEnvironmental health sciences