2010 It is still unclear under what circumstances these masks would be used , but , for example , employees who have to work together closely may use them , she said . : Federal government releases guidance on closures related to H1N1 . In Maryland , schools prepare for instruction when students are n't in class . Some schools have given up cleaning , offered hand sanitizer in schools . The closure of the school because of H1N1 is still being debated .
2010 : Federal government releases guidance on closures related to H1N1 . In Maryland , schools prepare for instruction when students are n't in class . Some schools have given up cleaning , offered hand sanitizer in schools . The closure of the school because of H1N1 is still being debated .