https://www.selleckchem.com/products/FK-506-(Tacrolimus).html The structure of plant communities, which is based on species abundance ratios, is closely linked to ecosystem functionality. Seed germination niche plays a major role in shaping plant communities, although it has often been neglected when explaining species coexistence. The aim of this work is to link the seed germination niche to community ecology, investigating how functional seed traits contribute to species coexistence. Species selection was based on a database of 504 vegetation surveys from the Veneto coast (Italy). Through cluster analysis we identified the foredune community and selected all of its 19 plant species. By using the 'Phi coefficient' and frequency values, species were pooled in different categories (foundation species, accidental species of the semi-fixed dune and aliens), then the 19 species were grouped according to their germination responses to temperature and photoperiod through cluster analyses. For each germination cluster, we investigated germination trends against temperatureecosystem functioning), and hence potentially altering the plant community structure. Our research suggests that different categories of species have dissimilar seed germination niches, which contributes to explaining their coexistence. Climatic events, such as rising temperature, could alter germination patterns, favouring seed regeneration of certain categories (i.e. alien and semi-fixed dune species) at the expense of others (i.e. foundation species, pivotal to ecosystem functioning), and hence potentially altering the plant community structure. Pre-existing antibodies to influenza, shaped by early infection and subsequent exposures, may impact responses to influenza vaccination. We enrolled 72 children (7-17 years) in 2015-16, all received inactivated influenza vaccines. Forty-one were also vaccinated in 2014-15 with 12 became infected with A(H3N2) in 2014-15. Thirty-one children did not have document