<prompt> Loeffler;s syndrome occurs in all exceptToxocaraStongyloidesAscarisGiardia  <response>: Giardia lamblia -intestinal flagellate,causing intestinal infection. Loeffler syndrome- inflammatory and hypersensitivity reaction in the lungs lead to cough ,fever, dyspnoea and eosinophilia toxocara causes visceral larva migrans . ref:Baveja textbook of parasitology 3rd edition. 