1.   And spraying campaigns, including the one in New York, inevitably raise public anxieties over pesticide exposure and collateral damage to fish and birds.

2.   But local governments have become alarmed and stepped up spraying campaigns.

3.   Facing growing pressure from alarmed citizens, several Central American and Caribbean governments have begun extensive spraying campaigns.

4.   The city has not routinely been conducting an aggressive surveillance campaign to look for the encephalitis virus in mosquitoes or an annual spraying campaign to suppress mosquito populations.

5.   Maryland, Michigan, New Jersey, Ohio, Pennsylvania, Virginia and West Virginia plan spraying campaigns from late April to early June.

6.   William Brownfield, a senior State Department official, denied that glysophate, the defoliant used in the spraying campaign, is dangerous.

7.   Struggling to treat the disease, Mozambican authorities hope the spraying campaign will help prevent it.