Although maternal immunity cannot be excluded, the low incidence of trypanosome infections in calves suggests low levels of challenge or low attractiveness to tsetse.
Interestingly, two animals (G.4 and G.6) did not develop viraemia and low levels of challenge virus could be detected in tonsil.
With regard to residents' challenging behaviors, across phases, residents engaged in low levels of challenging behaviors making those results difficult to evaluate.
Low levels of parasite challenge have been found to be sufficient for early development of functional immunity (53 ).
Elba Garcia, a Dallas County commissioner, said that any time a county has a low level of growth, it is a challenge for the tax base, regardless of the ethnic breakdown of the population.
Poor infrastructure and a low level of financing are the main challenges says Hickes, not to mention pretty serious competing interests such as food security, health centres, waste treatment and management, and a severe lack of housing.
The low level of online commerce has been a challenge for Rocket Internet's e-commerce startups, which started out with overly ambitious targets, missed their projections for profitability, and have required significant capital to continue.
This suggests low levels of aerobically challenging physical activity and is consistent with the 2003 WHO Global School-Based Sthatnt Health Survey that indicated Ugandan adolescents in urban areas engage in low levels of moderate- and high-intensity physical activity [ 32].
Appointment of an intensivist to the nursing staff for better patient outcome with low level of nursing care has not been challenged before in studies.
The challenge posed by low level of awareness must be overcome for prevention through strategies targeted at education and promotion.
