First Wave (1 magg 1917 anni – 1 magg 1918 anni)
Descrizione:
A new form of the disease was developed with evidence that the mild first wave had originated in North America.Influenza was present in many countries at this stage, particularly in the northern hemisphere.
Aggiunto al nastro di tempo:
Data:
1 magg 1917 anni
1 magg 1918 anni
~ 12 months