Background Influenza vaccines require annual readministration; however, several reports
have suggested that repeated vaccination might attenuate the vaccine's effectiveness. We …

In 2017, influenza seasonal activity was high in the southern hemisphere. We present
interim influenza vaccine effectiveness (VE) estimates from Australia. Adjusted VE was low …

Since December 2016, excess all-cause mortality was observed in many European
countries, especially among people aged≥ 65 years. We estimated all-cause and influenza …

Introduction Vaccination against influenza on an annual basis is widely recommended, yet
recent studies suggest consecutive vaccination may reduce vaccine effectiveness (VE) …

BACKGROUND: The effectiveness of repeated vaccination for influenza to prevent severe
cases remains unclear. We evaluated the effectiveness of influenza vaccination on …

Background People with diabetes are at high risk of severe influenza complications. The
influenza vaccination effect among diabetic patients remains inconclusive. We estimated the …

Objective To compare the antibody response to influenza between health care workers
(HCWs) who have received multiple vaccinations (high vaccination group) and those who …

Background Most reports of influenza vaccine effectiveness consider current-season
vaccination only. Aim We evaluated a method to estimate the effect of influenza vaccinations …

The 2017/18 interim estimate of trivalent influenza vaccine effectiveness (VE) was 39%(95%
confidence interval: 20–54) in Navarre. Compared with individuals unvaccinated in the …

Evidence of influenza vaccine effectiveness in preventing confirmed influenza among
persons diagnosed with chronic obstructive pulmonary disease (COPD) is scarce. We …