On the basis of scientific and epidemiological data and knowledge the WHO and the European Centre for Disease Prevention and Control (ECDC) are advising countries in the northern hemisphere to prepare for a new wave of the pandemic.
Tuginedes teaduslikele ja epidemioloogilistele andmetele ning teadmistele, soovitavad WHO ja Haiguste Ennetamise ja Tõrje Euroopa Keskus (ECDC) põhjapoolkera riikidel valmistuda uueks pandeemia laineks.