'ongoing effects' is a correct and usable phrase in written English.
You can use it to describe something that is continuing or that has long-lasting repercussions. For example, "The ongoing effects of climate change are becoming increasingly evident."
Activists in Ulanbataar will focus on the ongoing effects of drought in Mongolia.
The incidence of infection by a powerful new computer worm appeared to slow yesterday, but security experts warned that there might be ongoing effects.
There is increasing evidence that the ongoing effects of trauma are strongly dependent on the ways in which communities respond collectively.
She called on Ferreira to explain how Vale will compensate displaced families, contain the environmental damage and monitor the ongoing effects of the spill downstream.
The act was progressive legislation that recognised, and attempted to remedy the ongoing effects of, Aboriginal people being dispossessed of their land in New South Wales.
"These include the ongoing effects of colonisation, social disadvantage, drug and alcohol misuse, poor safety standards and unsafe roads and living environments.
But in 1974, when Hungary was still under Soviet dominion, Jancsó had an altogether more allusive way of dealing with that history and its ongoing effects.
Daniel Sugarman at ETX Capital commented: European markets continued to feel the ongoing effects of the situation in Greece, with fresh fears that the country will be unable to make yet another repayment due to the IMF.
The eastern US remained in the grip of fierce cold on Saturday, as forecasters warned of yet another winter storm amid the ongoing effects of the polar vortex and the almost equally sinisterly named "Siberian Express".
While the navy's actions received no punishment, this strongly contrasts with the Australian government's aggressive crackdown on the boats of our Indonesian neighbours and its ongoing effects on their families, who suffer punitive circumstances.
Some of the UK's main media owners were rendered bystanders as the ongoing effects of digital transformation were compounded by an economic crash that, for some, all but wiped out entire revenue streams.
