i>cG AprillljlI l-327,.        SO-~C thcPU~F~18 th'?t C7Kiie t0 i,T.B ttiis TOSTJinf~a


`,
Jk Ic) VT'
-4           IS IT POSSIRLF TO EXTFTrlIMATt AEDES AEXW-'TI I"! LJXTED CO'fTROL AREAS?

             HAS EXTERYVATION EWR BEE' A'?TE"?TEDZ

            IS IT FEASABLE 'lQ INVESTIGATE T'"E PROBLEM I"' BAHIA ?

  Dot kno\rinp; the -aweTs to the first tno questiona above, I can or.lp think
#at 1% ia worth some little fnvcotigatio?: in Bahia, bsc~ee great econa?iee
might result.

The following thoughts aame Co AS a course of investigation to follow:-

   1.  Keep a daQ/ list of ~qk~fooo" found, with zone number, nnme of street
and number, snd tyqe ot container in which Found, snd,  if *ssiblc, whet!,er large
or f3 all.

   2.  Select an a*TTrooriate arca for which we have x co-pletely detailed ma-~.
About ten &se in the contested ten rsl district mi -ht 8ufffoe-- the measnt 4tC:
D,ist,rict and a PW:J sdjoinin,? zones.

  3. Yake a, spot 7mp of all"fooofJ n found, using a different colored pin for
eech seek, for a month%  this to consitute R. wor!<in ,"; hsie before any control
meamrea be undertaker;.

  4. Detemine fron: this *:a7 if there is an.?; sort of focal dietribution. If
80 a:.te:spt to eliminate it

   3. Develope, if o ~oesfble,thr use of something to kill e,~~~e on the sides of
containers in which breediny: lhas been found.   Perhsos creoline or `ierceene would
ki!!. these eg~e.

  6. Personal inveatigstior.oP 911 houses wit aedee wfo~~e" 'a% during the
experimental period.

    7. The +aiblity of mslaures ag*Jinat adulis in houses where breediny, hRe
ti~~.en p- tJnd, might, warrsnt attention.   There is the bsre noesibilit;:, that by a
judicious oombfrmtion of chiefly ant$.lsrvsl -eaeuree, snd sscondnrily, eqecialfzeri
anti-adult measures, extinction in ? li~:ited and carefui.i:' wntchcd zone night be
                          -.
achieved.                  .j.              . ,-dir          _ .-

_-~-.

  8. Sh-uld extination 1:e achieved in any Riven qrea, a bsrra#Te of the -oat
intense control to be thro-zn -round the area,  or else the area OP extir:ction to I
1.a 8, lsrged.  The recent vzork of Dunn with ree ho! e brecdinr-. in ??rica to Fe kept
ir in&

   9.  If extinction !e achieved in an area, Wen hsve mart:-ly inspectio, 8, pro'
Perably by the trigsde system.    This ir, We llace where the soono.:y would coae
in,  It would make the lqbor 6osts in the zone about one Pourth OP whRt, they are
with the 9reaent system.
                        *

    Thie may seem a bit nild, but it does not eeemAany more of a departure
from the reasonable thsn :ies the first sttem9t to control yelloia fever by anti-
larval rleneurea alone.  It eeem8 to *,-e tff be worth investiE?tion.

     The above outline of inveeti.,qqtion involves alloozt no nez nroceedures.
!Vl.th the exception ,tf ",he visits to houses in i7hfch are found the "fotoeP, it, doe
not inwlve anythin `y not nor beinE done in Bahia.
visit8 ore now bein?; msde.                FI.trtl!ePwre, in Recife, such


April 13, 1927.

p&      I have ponderad considernbly over the bJdcetin:- of the expenees of the
    b-r  yello~z *er aoy;trol oper?tions.  I h?ve co=e to the co~cluoion thr?t al-oat all
     the expnises can :.e budgeted.  However: it -..::w:B advie.>t,le to lanve sore OF the
     aontrol operr tions outside a? 9 bu&et, or pe+39s, in d vcr- elastic 0t-e.
          The iqortant thing is, it 8EeaY to ..-a, thnt f'u: ly 9r>"; of the exqenses
     can be budgeted, in somewhat the following r:?nner.

   1.  Only olaces where service is to be continuously in operation for a neriod
o? eix months to come under the regular budgets,  E Thie would include onlythe
ststions 0P nermanent oorttrol.

   2.  Eaah at+.ion to hqve 8 &mffxr budget with si.~ilrar itorc: ntim!~ers, the
sn?ounts to vqry, of course, witA ERCH et-t&m. Eoth tkt- Lots1 s-nun& mr? the
oroportionnte s3ounts of the various itan-8.

4.. Eat); station budget to be in t::o narts, the first to include expenses
for control in the city proper, and the second to cover expenses in the permanent
interior stations,  For thie last, three or POtir items Voi:ld secu to t-e suQPiaient
                                                      27
     5  This w:uld neaeaait=?te, if the a::;aterr wexe pt:t inLo effect on July
but P;ie budgets,                                        1,  19
       Por Bahia, Recife, Par&y!a rind Ga@na Grande, Mrtpl, vd
Forta.leza, reapectivel;, each nith its rea-octive interioqc\etations.
  6. Temoor~ary control measures could then he financed by special grants for
Qqornry work in the vriclus other plrsceu indicated from time to time.

     .J`he above systee does not seem to :`:tr: to be unduly co~!plfasted.  It would
Tut eriah 8tRtion on cot more thar tw budgets, snc! rcost of them would te onm qne
moat of the time.                                                  .

   It ie perfectly obvious and well known that by far the larger port oP
the expenditures ooaur nor in the city of #ahiR with its surrounding tone of seaon-
dary cities, in Reaife, ParahybR and Cnmina &snde, in Wtal, and in Fortaleze.
Thee are the permsnent sf.ations where a-ntrcl ?leRsuree imd therefore costs are
relatively stibi! ized.
in aoatr.        The only th:ng thqt seen's linK:le to ha,nnen is a reduction
    The budgets ehmld sllow for so-.e exvwaion, or cow-m.

   perhaps, in my ignorance 0% the entire working of budgets, including their
course in and thru tl~e home office, this nlan haa insunarsbla and dangerous tiahni-
an1 diffioultieo.  The thought oaaure to me that oerhaps these budgets could tre
arranged within the yellow fever budget for Lhio ymr, snd $ve R l;iais for the
budgets and a-qsopriationa next year.

   Aa I read over this memorandum it seeir;s as if the tone were authoritative.
It is not meant to be such, jut in the 1Qhi. of my undqrstanding of the situstion,
which is only partial, the thinz seem3 feasable.