The phrase "a very small risk" is correct and usable in written English.
It can be used when discussing the likelihood of an event occurring that is considered to have minimal potential for negative consequences.
Example: "While there is a very small risk of side effects from the medication, most patients tolerate it well."
Alternatives: "a minimal risk" or "a slight risk".
A 100% increase of a very small risk is still a very small risk.
"I hope Iran will not miss this opportunity and will take a very small risk for peace.
Even if a vaccinated child gets a mild case — a very small risk — odds are you wouldn't even notice.
"The only thing we can do is prudently plan for what I think is a very small risk, but the risk probably does exist," he said.
As with any operation, there is a very small risk of a postoperative pulmonary embolism, but this complication can also occur after a vaginal delivery.
But the task our officers face in making split-second decisions when confronting armed criminals means there is a risk - a very small risk - that this will happen.
"This is about a very, very small risk of repetitive contact for any traces of contamination that people may have taken out," Public Health England's deputy medical director Jenny Harries said at the same press conference.
The potential side effects from prophylactic smallpox vaccination strongly outweigh the very small risk of a man-made smallpox epidemic.
Montgomery was awarded £5.25m compensation because doctors did not explain the very small risk associated with a normal birth in her case – she is small and a type 1 diabetic.
The very small risk of cancer from radiation exposure is an estimate and is based on information and statistics that are debatable" (SPR 2001 ).
> -wrap-foot> Genetestingtong to exclude an expanded huntingtin gene was not carried out in the control subjects for ethical reasons (genetic testing has many emotional and practical implications) (Novak and Tabrizi, 2010), but none of the controls were at increased risk above the very small risk in the general population of carrying an expanded huntingtin gene.
