The event, the fifth of its kind, was launched by the National Institute of Haematology and Blood Transfusion and the Hanoi Youth Blood Donation Mobilisation Association in response to International Volunteer Day (December 5).
More than 2,000 people, mostly carrying O blood type, gave their blood, hoping to ease the scarcity of this type of blood during the upcoming traditional Lunar New Year holiday.
Through the past four festivals, organisers have collected more than 6,412 units of blood to treat needy patients.
A wide range of activities were also held at the event, including a camping, an exchange programme between students and volunteers, and music and dance performances.
