Normal head size at birth doesn’t rule out microcephaly, Zika syndrome after birth; A consumer’s guide to the hottest field in cancer treatments — immunotherapy; The disturbing airborne allergen in schools that may be exacerbating your kid’s asthma; WHO no longer considers Zika a global health emergency;     Many LASIK patients may wind up with glare, halos or other visual symptoms, study suggests Almost half of participants in a study of LASIK developed new visual symptoms after the surgery. By Ariana Eunjung Cha  •  Read more » ADVERTISEMENT   Normal head size at birth doesn’t rule out microcephaly, Zika syndrome after birth The latest data show Zika-infected infants who were born with a normal head size and developed microcephaly months later. By Lena H. Sun  •  Read more »   A consumer’s guide to the hottest field in cancer treatments — immunotherapy While confident that immunotherapy will play an increasing role in cancer treatment, researchers must overcome some obstacles. By Laurie McGinley  •  Read more »   The disturbing airborne allergen in schools that may be exacerbating your kid’s asthma The study, published in JAMA Pediatrics, raises questions about whether “healthy” standards for allergens in schools may be needed. By Ariana Eunjung Cha  •  Read more »   WHO no longer considers Zika a global health emergency But experts worry that downgrading Zika's status sends the wrong message. By Lena H. Sun  •  Read more »   ADVERTISEMENT   Recommended for you   Lean & Fit Fitness and wellness trends in your inbox weekly. Sign Up »         Share To Your Health:       Twitter      Facebook Trouble reading? Click here to view in your browser. You received this email because you signed up for To Your Health. For additional free newsletters or to manage your newsletters, click here. We respect your privacy. If you believe that this email has been sent to you in error or you no longer wish to receive email from The Washington Post, click here. Contact us for help. ©2016 The Washington Post, 1301 K St NW, Washington DC 20071