Chinese port authorities have warned the public after claiming coronavirus was found in Brazilian chicken wings. A batch of virus-contaminated frozen wings were imported into the southern Chinese city of Shenzhen from Brazil, authorities claimed.The positive coronavirus test was confirmed by the city government on Thursday and raises fears further food shipments could cause new outbreaks.Local disease control centre tests on frozen meat and seafoods have been carried out since June, the city authorities said in a notice.The screenings were implemented after a coronavirus outbreak in Beijing was linked to a seafood market.A new outbreak in Beijing was linked to the city's Xinfadi wholesale food centre with authorities keen to eliminate the.