_:vb50936367 . _:vb50936367 . _:vb50936367 "An upper respiratory tract disease involving inflammation of both larynx and trachea often caused by viral infection. The infection can close off the windpipe."^^ . _:vb50936367 . _:vb50936367 "url:http://www2.merriam-webster.com/cgi-bin/mwmednlm?book=Medical&va=laryngotracheitis"^^ . _:vb50936367 . _:vb50936367 .