Several people have been arrested in Bangladesh for issuing bogus documentation to people who have not been tested for the coronavirus showing they are not infected. Such documents are required for migrant workers, who need to show that they are virus-free when they arrive at their overseas destination, and whose remittances back to their families are an important source of income for the country ($19 billion in 2019). Criminal gangs advertise on social media to find potential buyers; in one…