New York besieged : 11 September and after.

Epidemiologists all over the world have been good enough to express their concerns and worries about how we, and other friends and colleagues in New York, fared in the terror provoked on 11 September. This annotation responds to the editors’ invitation that we convey something from our vantage point.We welcomed their interest. The experience is, so far, unique in history. Our account is personal, that of four individuals, all related (Sally married to Ezra, and Ezra born to Mervyn and Zena).

We share the same house. Also, atypically for any institution, all are of the Department of Epidemiology in the Mailman School of Public Health of Columbia University. The themes we emphasise are common to many others among us in New York City. On the day of 11 September and after,much of what we saw and heard was televised, a source open to everyone else here and elsewhere.

In some degree, then, much of the world was exposed to the New York experience. But in the Department of Epidemiology (the School and the Medical Center are on the north west outskirts of Manhattan) we were not only in propinquity to the events, we looked directly upon them from the south facing windows of the 18th floor of our own dwarfed tower.