According to reports, the 2009 swine flu vaccine is not connected to the increase in the neurological disorder called Guillian-Barre syndrome.

Also, the study published in the British Medical Journal, is said to be part of a ‘safety probe’ into the booster-aided flu vaccines, which goes 35 years back.

The immunization against the "swine flu" virus in the United States, in 1976, was stopped after doctors discovered that there was 7 times increase in risk from Guillain-Barre, though other Studies on seasonal virus vaccinations did not find increases or modest increase in risk, which left the issue on whether the flu jab could be dangerous or not, unsettled.

Guillain-Barre is said to be a disease ‘in which the body's immune defenses, attacks nerve cells, causing muscle weakness and sometime paralyses. It is very uncommon, as it occurs ranging between 0.4 and 4 per 100,000 person years, which is a ‘measure of risk’ used in epidemiology, and it’s fatal in 3% to 10% of the cases.

In the study, the safety probe compared 104 cases of Guillain-Barre syndrome with people who were healthy, and they discovered no evidence of the risk of Guillain-Barre syndrome from the vaccination.

Moreover, though they could exclude that there were small increased risk, the study is said to offer “reassurance that adjuvant pandemic influenza A (H1N1)” 2009 vaccines did not lead to the increase in the risk of Guillain-Barre syndrome.