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A28    SCIENCE
                 Monday 9 october 2017

















            Health officials watching mosquitoes in Texas after Harvey


            By JAMIE STENGLE
             Associated Press                                                                      vey  washed  away  mos-      that’s  something  that  we
            DALLAS  (AP)  —  Health  of-                                                           quito  eggs,  “nuisance”     are  going  to  continue  to
            ficials  in  Texas  will  be  on                                                       mosquitoes       emerged.    monitor,” Shah said.
            watch in coming weeks for                                                              Those don’t typically carry   Sven Rodenbeck, chief sci-
            any increases in mosquito-                                                             disease  but  can  have  an   ence officer of the Centers
            borne  diseases  including                                                             impact on recovery efforts   for  Disease  Control  and
            the  West  Nile  and  Zika  vi-                                                        by  swarming  people  as     Prevention’s  hurricane  re-
            ruses after Harvey’s heavy                                                             they  clean  up  and  repair.   sponse,  said  there’s  a  po-
            rains and flooding brought                                                             Any  remaining  standing     tential  for  upticks  in  mos-
            water that filled ponds and                                                            water  is  an  issue  because   quito-borne  diseases  after
            ditches and crept into trash                                                           Culex  mosquitoes  tend  to   hurricanes,  so  “that’s  why
            and debris that piled up.                                                              lay eggs in larger areas of   you  normally  do  moni-
            “We’re  not  out  of  the                                                              still  water  like  ponds  and   toring  and  as  appropri-
            woods. I still think we don’t                                                          ditches,  while  the  Aedes   ate  do  mosquito  control
            really know what we’re go-   In this Sept. 7, 2017, file photo, homeowner Sohail Soomro dumps   usually breeds in small wa-  activities.”In the U.S. main-
            ing  to  see,  so  that’s  why   flood damage debris on his front yard in the aftermath of Hur-  ter-filled  containers  near   land, Florida and Texas are
            we’ve  got  to  monitor  it,”   ricane Harvey at the Canyon Gate community in Katy, Texas.   homes.                 the  only  two  states  that
                                                                                  Associated Press
            said Dr. Peter Hotez, dean                                                             “So  all  of  that  debris  and   have  seen  local  transmis-
            of  the  National  School  of   dated from Harvey.        who  do  may  have  fever,   trash  that  you  see  around   sion  of  Zika,  which  can
            Tropical  Medicine  at  Bay-  “It  looks  like  they’ve  got-  headache,  vomiting  and   Houston  as  the  floodwa-  cause  brain  damage  in
            lor College of Medicine in   ten  pretty  good  results,”   diarrhea.  In  rare  cases,   ters  recede,  there’s  going   babies whose mothers are
            Houston.  “The  next  month   said  health  department    people  develop  severe  ill-  to  be  pockets  of  water  in   infected when pregnant.
            is  going  to  be  the  critical   spokesman Chris Van Deu-  nesses such as encephalitis   there  —old  discarded  TV   Officials  in  Florida,  where
            time,” he added.             sen,  adding,  “Hopefully  it   and meningitis, which can   sets, old discarded tires —   Hurricane  Irma  hit  two
            Officials   are   hopeful,   will prevent any kind of up-  be deadly. Texas has had    and  that  could  easily  led   weeks  after  Harvey,  are
            though,  that  aerial  and   tick.”                       at  least  100  human  cases   to  an  increase  in  Aedes   also  closely  monitoring  for
            ground  spraying  done  af-  Of  particular  concern  is   this  year,  including  three   aegypti,” Hotez said.    mosquito-borne    diseases
            ter Hurricane Harvey made    West  Nile.  Texas  trails  only   deaths.                As expected in the Houston   and have increased spray-
            landfall on Aug. 25 will help   California  this  year  in  the   While  there’s  currently  no   area,  an  increase  in  mos-  ing in several areas. Florida
            ensure  that  populations    number  of  cases  of  the   evidence of ongoing trans-   quitoes  came  about  two    also  currently  has  no  on-
            don’t  swell.  The  Texas  De-  virus,  which  is  transmit-  mission  of  mosquito-borne   weeks  after  the  storm.  But   going  transmission  of  Zika,
            partment  of  State  Health   ted  from  infected  birds   diseases  including  Zika,   Dr.  Umair  Shah,  executive   chikungunya  or  dengue,
            Services  said  more  than   to  humans  by  the  com-    dengue or chikungunya in     director  of  Harris  County   and this year has only had
            7  million  acres  (2.8  million   mon Culex mosquito. Most   Texas — all three spread by   Public Health, said officials   one locally acquired case
            hectares) were sprayed by    people    don’t   develop    the Aedes aegypti mosqui-    were  able  to  get  those   of West Nile.Health officials
            plane  across  areas  inun-  any  symptoms,  but  those   to — officials are watching   numbers  down  with  aerial   in both states say residents
                                                                      on  guard  for  any  emer-   and ground spraying.         need  to  stay  vigilant  by
                                                                      gence. That could happen     “We’re  pretty  confident    using  mosquito  repellent,
                                                                      if someone who had trav-     that  the  combination  of   wearing clothing that cov-
                                                                      eled  to  a  place  with  ac-  everything  we’ve  done    ers  arms  and  legs,  and
                                                                      tive cases got the disease,   has  reduced  the  risk  of   draining standing water.
                                                                      returned to Texas and was    mosquito-borne  disease  in   “There’s  only  so  much
                                                                      bitten  by  a  mosquito  that   our  community,  especially   that   government   and
                                                                      in  turn  bites  and  infects   for  West  Nile  virus.  But  we   public  health  and  mos-
              Tour to the Red Light       Lipstixaruba@outlook.com    someone else.                don’t  know  if  that  risk  will   quito  control  can  do,”
              District with a Private                                 Van Deusen said that after   return  if  we  have  an  in-  said  Shah,  adding,  “It  re-
              Guide & a FREE bottle      (297) 630-5329               a  brief  reprieve  as  heavy   crease in mosquitoes over   ally is a partnership with our
              of wine...                                              rains  and  floods  from  Har-  the next several weeks and   community.”q
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