The phrase "are much less prevalent" is correct and usable in written English.
It can be used when comparing the frequency or occurrence of two or more things, indicating that one is significantly less common than the other.
Example: "In recent years, traditional print media are much less prevalent than digital platforms."
Alternatives: "are significantly rarer" or "are far less common."
Such loans are much less prevalent now, in part because of a federal crackdown on banks that made many of the loans.
However, successes treating solid tumors are much less prevalent.
This is around 10 pp. lower than the aggregate share for the whole Spanish economy because seasonal activities associated to the manufacturing industry are much less prevalent than in the services and construction sectors.
The possibility of mechanism (1) can be excluded, because hydrogen atoms are much less prevalent in the large platelet graphite used in this study than they can be in graphene flakes.
The capability approach could thus also be used by a single individual in her deliberate decision-making or evaluation processes, but these types of uses of the capability approach are much less prevalent in the philosophical literature, let alone in the social sciences.
Unfortunately, Berzin said, mentoring programs designed specifically to help foster kids are much less prevalent.
It is much less prevalent in people of African descent, the scientists said.
Bacterial nodulation is much less prevalent than in either of the other two subfamilies.
Standardized testing has become part of the landscape in primary and secondary schools, but is much less prevalent in colleges.
"In southern koala populations, where koala retrovirus is much less prevalent, normal immune functions tend to result in fewer cases of chlamydia," Dr. Gillett said.
The problem of repetitive claims is much less prevalent in coastal New York and New Jersey, where FEMA estimates Hurricane Sandy flooded 100,000 insured homes.
