Influenza activity - United States, 1989-1990

Article Abstract:

The spread of an influenza-like illness was reported from mid-December, 1989 to mid-January, 1990 in 10 states, with 19 more states reporting regional activity and 22 states reporting sporadic activity. Visits to 110 family practice physicians in 43 states increased, and three percent of patients seen by physicians for influenza-like illness were hospitalized. Persons 65 years and older were more likely to be hospitalized than patients less than 65 years of age. Influenza A (H3N2) is the predominant influenza viral strain or type, accounting for 98 percent of 335 isolates, or microorganisms isolated from patients of all age groups. Since December 15, 1989, outbreaks of respiratory illness occurred in 68 of 329 Connecticut nursing homes, and influenza A viruses were isolated from patients at six of these nursing homes. For the week ending January 13, 1990, 121 cities that routinely report death rates to the Centers for Disease Control associated eight percent of deaths with pneumonia and influenza. The use of vaccination against influenza and antiviral drug treatment with amantadine have decreased the duration and severity of influenza A outbreaks in nursing homes, although resistance or insensitivity to amantadine has developed among some strains of influenza A virus. It is suggested that patients receiving amantadine as treatment for influenza-like symptoms be separated from persons receiving amantadine as a prophylaxis or preventative measure against influenza. (Consumer Summary produced by Reliance Medical Information, Inc.)

Influenza vaccines, Drug therapy, Protection and preservation

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Update: influenza activity - New York and United States, 1994-95 season

Article Abstract:

Influenza outbreaks began in the northeastern part of the country and spread to other regions in January 1995. Data on flu outbreaks occurring between October 2, 1994, through February 11, 1995, and reported to the Centers for Disease Control and Prevention, were analyzed. The first outbreak associated with influenza type A occurred in a nursing home in Long Island, New York, on November 30, 1994. Outbreaks associated with influenza type A occurred in 46 other nursing homes between December 1, 1994, and February 11, 1995. Five other nursing homes had influenza type B-associated outbreaks and two nursing homes had outbreaks associated with both types. Between January 22 and February 11, 1995, influenza was reported in states from every area of the country. The number of influenza-associated deaths exceeded the epidemic-defining threshold during six weeks between October 2, 1994, and February 11, 1995.

Health aspects, Nursing homes

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Influenza activity - United States, 1989

Article Abstract:

Characteristics of the first influenza outbreaks of the 1989-1990 season are being reported by the Centers for Disease Control (CDC). Influenza A(H3N2) and influenza A(H1N1) have been isolated from patients and resemble two vaccine virus stocks, A/Shanghai/11/87 and A/Taiwan/1/86, respectively. During the week of December 9, sporadic cases were reported in 20 states, and sentinel family practice physicians reported an increase in influenza-like illnesses, accounting for 4.4 percent of office visits. The CDC editors point out that the continued culturing of patients with influenza-like illnesses is encouraged. (Consumer Summary produced by Reliance Medical Information, Inc.)

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