The phrase "a decrease in host" is correct and usable in written English.
It can be used in contexts discussing a reduction in the number of hosts, such as in ecological or biological studies.
Example: "The researchers observed a significant decrease in host populations, which could impact the local ecosystem."
Alternatives: "a reduction in host" or "a decline in host".
In its hosts, TEV induces stunting and mottling, necrotic etching and malformation in leaves; the combination of these symptoms results in a decrease in host fitness [17].
The consequences in terms of fitness and virulence are also quite different: if the healthy host phenotypic plasticity is not adaptive, its suppression by the virus probably does not cause a decrease in host fitness.
In such scenarios, coevolving phage can only drive a decrease in host growth rates; as hosts evolve to become more resistant, their growth rate is reduced.
In this case, UV-killed T4R and T4RΔ ply induced the same level of both IL-12 p70 (Fig 3C) and IL-8 (Fig 3D) and neither strain caused a decrease in host cell viability.
A dramatic increase in the parasite population size from 2002-2004 was followed by a decrease in host numbers in 2004 and 2005, which was followed by a decline in parasite numbers in 2005.
RNAi knockdowns of Drosha and Dicer, two crucial proteins in animal miRNA biogenesis, resulted in a decrease in mature host miRNAs, which led to increased sensitivity of host to virus infection [ 15, 40].
The tumor -bearing state is associated with a decrease in the host insulin: glucagon ratio.
The immunoparalysis caused by sepsis is associated with a decrease in the host's ability to clear bacteria.
Furthermore, increased parasite fitness led to a significant decrease in host fitness only on a single host line (Gb), although a trade-off between these two traits was expected because host and parasite share the same resource pool for their respective reproduction.
Furthermore, seven days after host Th2.R cell infusion, we observed a marked decrease in host CD4+ T cell capacity for IFN-γ secretion (Fig. 3c; v).
Alkhalil et al. described a generalized decrease in host mRNA levels 3 and 7 hours after MPV infection of Macaca mulatta kidney epithelial (MK2) cells.
