The phrase "a string of fatal" is correct and usable in written English.
It can be used to describe a series of fatal incidents or events, often in a context discussing consequences or outcomes.
Example: "The investigation revealed a string of fatal accidents that could have been prevented with better safety measures."
Alternatives: "a series of deadly" or "a chain of fatal".
The shooting followed a string of fatal police encounters.
Indonesia has had a string of fatal train crashes recently.
Justice began investigating the Detroit police in 2001 after a string of fatal shootings by officers.
Such vans have come under increasing scrutiny after being involved in a string of fatal crashes.
The scandal followed a string of fatal crashes that occurred when Toyota accelerator pedals got stuck.
In 2011, a string of fatal shootings in Miami led to a United States Department of Justice investigation into the department.
It was the first of a string of publicized, fatal race-related attacks by mobs in New York City in the 1980's and early 90's.
This accident is just the latest in a string of recent fatal airline accidents in Nepal, and has once-again raised questions about the safety of air travel to one of the most iconic tourist destinations in Asia.
The "roller-coaster loophole" remained largely unchallenged until a string of 4 fatal accidents in 1999 prompted Rep. Ed Markey to introduce a bill to return regulatory powers to the C.P.S.C.
WASHINGTON — Confronting a string of six fatal commuter plane crashes, top federal officials promised on Monday to set new rules to limit fatigue, make the carriers more thoroughly investigate the histories of pilots they want to hire, and push small airlines into adopting the safety programs that are common among big carriers, by threatening to expose the laggards.
The Medical Board of California has launched an investigation into a string of 16 fatal overdoses tied to powerful narcotics prescribed by a prominent Orange County physician.
