In general, there is a scarcity of entomologists trained in mosquito control, and this has led to a backlog in hiring, some officials said.
To jumpstart the market, the state established a rebate program, financed by a surcharge on utility bills, which worked so well it led to a backlog of applications.
Delays in processing cases led to a backlog of more than 5,800 inmates who had not received their required parole hearing, leading to the class action lawsuit.
On Sunday, Germany responded to the on-going refugee crisis by imposing new checks at its borders, that have since led to a backlog of people waiting in Austria to cross into the country.
It says poor management has, in part, led to a backlog of misconduct cases.
Channel Tunnel rail passengers have faced train cancellations and major delays after a series of problems led to a backlog in services.
Refuse collectors held a one day strike on 20 December but the bad weather and the Christmas break has led to a backlog of binbags left on the streets.
But because the body can only process only a fixed amount of acetaldehyde every hour, drinking excessively leads to a backlog, which means cell and tissue damage and the associated effects of a hangover.
Yet's there's $60 billion in potentially reclaimed fines and settlement payouts from drug companies waiting to be collected -- but the under-funded Justice Department's enforcement of fraud claims has led to a backlog of 180 pending whistleblower lawsuits.
The strike action led to a backlog of tens of millions of items of undelivered mail, with an estimated 30 million letters and parcels affected after the first wave of walkouts, and rising to in excess of 50 million following the second.
