"affects seriously" is a correct and usable phrase in written English.
It means to have a significant impact or influence on something or someone in a negative or harmful way. Example: The continuous use of plastic bags affects seriously the environment, leading to pollution and harm to wildlife.
Premature ovarian insufficiency (POI) affects seriously physical and mental health of the patients.
This assumption may not be satisfied in most cases and affects seriously all related applications in chemical and petroleum engineering.
Speaking is our best way of communication, losing voice after a tracheostomy affects seriously patients way of life.
The image will be polluted by various noises in the process of acquisition and transmission, which affects seriously the effect of image segmentation in post processing because noises are amplified probably.
LONDON — The strike of transport workers here in England has begun to affect seriously transatlantic voyages.
We conclude that for a given spatial configuration light flashes can affect seriously the operating mode of high sensitivity instruments.
Disturbed traffic conditions such as traffic jam, roads with sever slopes may affect seriously the energy consumption and then the performances of EVs.
A higher limit of 0.01 Ω cm2 was found to the metal semiconductor resistance without affecting seriously the efficiency of the device.
However, an underestimation of that number can affect seriously overall performances[24].
It is obvious that the simplified joint acquisition without satellite selection is affected seriously by the abnormal signals.
Infants who had taken this kind of formula milk could develop kidney stones and if affected seriously, the consequences could be fatal (Noronha et al., 2013).
