Update: influenza activity - United States, 1996-97 season

Article Abstract:

The incidence of influenza increased from mid-November up to the weeks of December 28, 1996 and January 4, 1997, when 38 states reported regional flu outbreaks to the Centers for Disease Control and Prevention. At that time, 31% of specimens tested by the CDC were positive for the influenza virus. Many of the outbreaks occurred in nursing home residents. Adults and children are fairly well protected by the flu vaccine, but elderly people have an impaired immune response to the vaccine. However, the vaccine can still lower death rates from influenza in the elderly.

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Update: influenza activity - United States, 1997-98 season

Article Abstract:

Influenza continues to cause significant illness and death, especially in nursing home residents. During the 1997-98 flu season, the number of cases rose between October and December, peaked in late January, and then declined. Influenza outbreaks were reported in nursing homes in Connecticut, New York and Virginia. An outbreak also occurred on a military base in Hawaii. The A(H3N2) strain was the predominant strain, and this strain is covered by the current influenza vaccine. The vaccine appeared to reduce the death rate but cannot always prevent the disease.

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Update: influenza activity - United States, 1996-97 season

Article Abstract:

The incidence and mortality from influenza has so far not exceeded epidemic proportions. Influenza was first reported during the week ending October 19, but has increased since mid-November. Of 602 isolates of influenza virus reported to World Health Organization labs in the US, 99% were influenza type A and all 158 isolates examined in more detail were subtype A(H3N2). This subtype is covered by the 1996-97 influenza vaccine. Twenty-three outbreaks of influenza had occurred nationwide as of December 7, 1996.

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