The phrase "affecting several" is correct and usable in written English.
It can be used when discussing the impact or influence of something on multiple entities or individuals.
Example: "The new policy is affecting several departments within the organization."
Alternatives: "impacting multiple" or "influencing several".
Security researchers have found two severe vulnerabilities affecting several popular wireless access points, which — if exploited — could allow an attacker to compromise enterprise networks.
PTPN2-knockout mice have altered hematopoiesis affecting several lineages [9] and develop severe inflammation within two weeks of birth [8] [11].
We will discuss how new technologies are affecting several of the biggest issues in global finance.
At about 1 30 p.m., the airport tweeted that there was a power outage affecting "several areas" of the airport.
A second strike, last weekend, was more widespread, affecting several Damascus neighborhoods as well as the souks.
During seed development, TTG1 simultaneously play distinct roles in affecting several key traits that share the same carbon source.
It is difficult to isolate or change a single variable — like loudness — without affecting several others in unanticipated ways.
The city seeks to loosen zoning on Hillside Avenue to allow more high-rises, as part of a 368-block master plan affecting several neighborhoods in the borough.
There is growing evidence that NAFLD is a multisystem disease, affecting several extra-hepatic organs and regulatory pathways.
During August September 2004, four major hurricanes hit Florida, resulting in widespread power outages affecting several million households.
Notably, integrated analysis showed enrichment of genetic lesions affecting several important cellular processes and pathways, including chromatin modification, ERBB-PI3K signaling and autophagy machinery.
