Pesticides and Neurologic Symptoms: Kamel et al. Respond

Pesticides and Health Effects: Karpati et al. Respond

I noticed with interest the article “Pesticide Spraying for West Nile Virus Control and Emergency Department Asthma Visits in New York City, 2000” by Karpati et al. (2004). I am a physician who treats hundreds of patients with chronic illness from chemical overexposure. Many of these patients have toxic encephalopathy, reactive airway disease, and other chemically induced organ system damage. W...

Biomonitoring of Exposure to Organophosphate Pesticides: McKelvey et al. Respond

Although urinary excretion levels of dialkyl­ phosphates (DAPs)—which are metabo­ lites and environmental degradates of OP insecticides—are useful as quantitative indi­ cators of exposure to OPs in agricultural workers, they are not as useful for the gen­ eral population. For agricultural workers, the source of the OP and time of exposure are typically known, and there is substan­ tial exposure...

Clayton et al. respond.

Lusk et al. respond.

We thank Schimek for his thoughtful letter. We agree that the American Association of State Highway and Transportation Officials (AASHTO) encourages bike paths; however, AASHTO’s definition of a bike path is a shared use path for pedestrians, skaters, wheelchair users, joggers, and other nonmotorized users. AASHTO discourages bicycle-only cycle tracks because, as noted by Schimek, AASHTO discou...

Nanotoxicology: Gangwal et al. Respond

Gangwal et al. (2011) addressed an important topic for nanotoxicology about assessing the toxicity of inhaled nano materials by recom mending relevant concentrations for in vitro toxicity testing. Their efforts to select in vitro concentrations based on reported occupational exposure levels of inhaled nano materials are, indeed, laudable. Their under lying conceptual approach is logical, involv...