Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 11 of 11 for “"herd immunity"”.
-
West Nile Virus Seroreversion and the Influence of Herd Immunity on Disease Risk in a Long-term Study of Free-ranging Birds
… antibody titers. Although rarely tested, avian herd immunity and seroreversion could have a direct impact on Culex infection rate, a proxy for the reproductive number of WNV. In this study, we utilized data from a seven year study investigating WNV transmission ecology in suburban Chicago, …
-
Modeling reduction of pandemic influenza using pharmaceutical and non pharmaceutical interventions in a heterogeneous population
… vaccine targeting techniques in achieving herd immunity, that is, the point at which there is no further growth in new infections. In the second half of this work we switch to a practical application of OR methods in a pandemic situation. We evaluate the effectiveness of vaccines …
-
Determinants of Immunity against the Meningococcus
… the spread N. meningitidis and thus eliciting herd immunity within a vaccinated population. Within this thesis, I aimed characterize vaccine elicited immune processes necessary for protection against meningococcal nasal colonization and invasive sepsis. To characterize vaccine elicited …
-
Dynamics of Naturally Acquired Antibody Against Haemophilus Influenzae Serotype 'A' and the Impact of Vaccination
… timelines and frequency of natural boosting of immunity in order to prevent invasive Hia disease. Using laboratory data collected in a Canadian population, this model indicates that frequent boosting of natural immunity is required to maintain anti-Hia antibodies at levels required to prevent …
-
Vaccine policy & vaccine politics: an analysis of United States vaccine uptake by state-level school and childcare vaccination mandate policies and state-level election results
… guaranteed vaccination coverage sufficient for herd immunity for several infectious diseases in many states. Exemption processes, provisional enrollment policies, and mandate enforcement all vary widely by state. This dissertation aims to characterize the associations between vaccination …
-
Knowledge, attitudes and practices of caregivers towards measles and measles vaccine in a selected village in Vhembe District, Limpopo Province
… exposure to the disease, to sustain community herd immunity.
-
A study of public relations strategies employed by healthcare organizations in Missouri to combat COVID-19 vaccine misinformation
… affecting public health efforts to achieve herd immunity and put the COVID-19 pandemic under control. The importance of effective public relations strategies to address COVID-19 misinformation cannot be overstated. This study explored strategies implemented by healthcare professionals …
-
Subacute measles encephalitis: The neurological sequelae of the measles outbreak in South Africa
… virus PCR in urine and CSF. The importance of herd immunity, by enforcing the national vaccination programme, is reiterated.
-
Monitoring immune dynamics following infection and vaccination using B cell receptor sequencing
… In addition to the overall drop in measles virus herd immunity, measles-induced immune suppression can compromise immunity to other infectious pathogens, thus complicating global vaccination and surveillance efforts. The exact mechanisms underlying the prolonged immune-suppression associated with …
-
Essays on resistance against persuasion: Building, strengthening, and spreading attitudinal resistance through inoculation theory.
… contributes to the quest for psychological herd immunity against misinformation. In sum, this doctoral research sheds light on the antecedents that underpin the inoculation process and how resistance against misinformation can be build, strengthened, and ultimately spread from one individual …
-
Epidemiological model of the transmission and spread of Hepatitis B pandemic in Ghana
… proportion of H = 0:4067 was calculated as the herd immunity threshold value of the population. This means that about 41% of the population are needed to be immune in order to adequately reduce the rates of transmission to keep the disease under control. Variability in the regional threshold …