The phrase "a virus that affects" is correct and usable in written English.
You can use it when describing the impact of a virus on a specific organism, system, or process.
Example: "The flu is a virus that affects the respiratory system, leading to symptoms such as coughing and fever."
Alternatives: "a virus that influences" or "a virus that impacts".
New madnesses appear by the day: Russia has blocked the import of pigs from the EU because of a virus that affects cows and sheep.
What was learned is now being used for a much smaller children's device, to help them get over a virus that affects their heart, or acts as a bridge to transplant.
A berry and pineapple producer in Oregon announced late Monday night that it was voluntarily recalling a frozen blend of organic berries after the Centers for Disease Control linked it to a multistate outbreak of hepatitis A, a virus that affects the liver.
Ultimately, however, The Phantom Pain's major plot thread turns out to concern a virus that affects only English speakers, and the primary antagonist, "Skull Face", is driven by a deep, principled aversion to Western imperialism.
The common cold is a virus that affects your body in many ways and can be really miserable depending on how your immune system reacts to it.
Greene won the Diamond League event in Lausanne during June, but then came down with a virus that affected his performances.
After contracting a virus that affected his play at his first official tournament of the year in Doha, Qatar, he delayed his arrival here to recuperate.
Arlen is a former champion swimmer who was left paralysed in 2006 by a virus that affected her spinal cord and also left her in a vegetative state for two years.
Arlen, who was paralysed in 2006 by a virus that affected her spinal cord and also left her in a vegetative state for two years, was deemed "ineligible" for the Games by the International Paralympic Committee on the eve of the competition, but later won an appeal.
Thus, swine play a critical role in the ecology and emergence of influenza A viruses that affect human health, as illustrated by the emergence of the 2009 pandemic influenza virus (influenza A[H1N1]pdm09 virus), a reassortant virus with origins that have been traced to influenza A viruses circulating among swine in North America and Eurasia (6 – 8 ).
Last week, California Governor Jerry Brown declared a state of emergency amid a growing outbreak of Hepatitis A, a highly-contagious virus that affects the liver.
