Tꢀ EꢁICATION OF POLIOꢂELꢃTIS
ꢄhe Albert ꢀ• Sabin ꢅtuꢆꢇ)
by
Donald Heꢀꢁrson, M.D., M.P.H.
Univꢁrꢂity Diꢂꢃꢄnꢅꢆꢂhꢇ Servꢄcꢊ Professor
ꢁ Johꢈ Hopkins Unꢄꢉꢊꢋꢄꢃy Bꢌlꢃimorꢊꢏ Marylꢌꢀ 21205
Cꢀo de ꢍdroꢎꢏ M.D., M.P.H.
Rꢁgꢄoꢐl Adꢉꢄꢎor
ꢑpaꢀꢒ Progrꢓꢁ on ꢔꢕꢖꢃꢄꢗn
Pꢌn Aꢘrꢄcꢌꢙ Heꢌlth Organꢄzaꢃꢄon
5ꢜ5 23rd Strꢚꢛꢏ N.W.
Waꢂhꢆngꢃon, D.C. ꢜꢝ37
Introducꢉioꢋ
- The
- ꢔꢄderstaꢄdꢅꢋg ꢟꢄd ꢔlꢣimꢎꢉe coꢄqueꢤt of poꢚꢅomyeꢚꢅtꢅꢤ waꢤ Aꢀꢁꢂt Sꢎbꢅn'ꢤ ꢀiꢦe-
- with hiꢤ earꢀieꢤt work
- ꢀoꢄg preoccupꢎtioꢋ, ꢁꢃiꢄꢄꢅꢄꢃ
- ꢅn 1931. (Sꢎbiꢋ aꢄd Oꢀiꣁsky, 1936;
- ꢣhꢎꣁ effoꢂt ꢝꢎꢠ ꢎpꢉꢚy ꢤummarized by Pꢎuꢚ iꢋ hꢅꢤ ꢚꢟꢋdmaꢂk
- ꣃꢎꢈin, 1965)
- The mꢎꢃꢺꢊtude of
hiꢤꢣory of polio: "No maꢄ haꢠ eveꢂ ꢆoꢄꢇiꢈuꢉed coꢄtiꢄꢔousꢚy over so maꢄy yeꢟrꢠ - ꢣo ꢠo mꢎꢄy ꢎꢤpeꢆtꢤ of poliomyeꢀiꢉꢅꢤ." (Pꢎꢔlꣂ 1971) Thuꢠ,
ꢤo
mꢔch effecꢉꢅve ꢊꢋꢌꢍmꢎꢉꢅoꢋ - aꢄd ꢏ
ꢎppropriꢎteꢀyꣂ ꢉhiꢠ iꢋꢎugural Sꢎꢈiꢑ lectuꢧe dealꢤ ꢝith poꢚꢊomyeꢀiꢉiꢠ ꢎꢋd iꢉs eꢂꢎdiꢆꢎꢉꢅon.
Poꢀio Vꢎccꢅne Deveꢀopmeꢋꢉ aꢋd Itꢠ ꢐꢑꢒꢓꢔctioꢋ
- ꢣhe queꢤꣁ foꢂ ꢕꢀio ꢖoꢋꢇoꢀ aꢋd ultimꢎꢉeꢀy erꢎdꢅcꢎꢉioꢋ, ꢠeverꢎꢀ lꢎꢋdmꢟꢧkꢘ deꢗrve
- In
- At the oꢔꢣꢠetꢱ pꢧogreꢤꢤ wꢎꢤ coꢄꢉiꢄgeꢋꢉ oꢋ the deveꢀopmeꢋꢉ of ꢎ vꢎꢖꢖine
- ꢘꢙciꢎꢚ meꢋꢉion.
- ꢎnd
- the prodꢮctioꢋ of ꢎ vꢎꢖꢖꢅꢋe, iꢋ ꢛ neceꢤꢤitated the diꢻcover
- y of ꢋeꢝ meꢣhodꢘ ꢉo ꢜoꢝ
- quꢎꢺꢉiꢉieꢤ of virꢔꢤ. The breꢎkꢣhrough occꢔꢂred in 1969 ꢝheꢋ Enderꢤ aꢋd hiꢤ
- ꢀarge
- ꢤhowed thaꢉ ꢚaꢧge qꢔaꢺꢉꢅꢉieꢤ of polioviruꢠ coꢔꢀd be ꢞoꢝꢋ in ꢎ vaꢧiety of hꢔmaꢑ
- coꢀꢀeꢎgueꢤ
cꢪꢀꢀ ꢉiꢤꢤꢮe cꢮlꣁureꢤ aꢋd thꢎt the viꢂꢔꢤ coꢮꢀd ꢁ qꢔꢟꢄtiꢣꢟtꢊveꢀy ꢟꢠꢠꢎyꢡ by ꢅtꢻ cytopꢎꢉhic
effect. (Enderꢘꢱ Weꢚler ꢟꢋd Robbiꢋꢤ, 1969)
Prepꢎꢂꢎtion of ꢎꢋ inꢎcꢢvꢎꢣed vꢎꢖꢖꢅꢋe ꢝaꢘ, iꢋ pꢂincipꢴeꣂ ꢎ compꢎꢂꢎꢷively
- pꢨꢩꢪꢤꢘꢫ In brief, ꢀꢎrge qꢮꢎꢺꢉitieꢤ of virꢮꢘ ꢝeꢯe ꢜoꢬꢭ ꣁhen
- ꢤꢥꢎighꢉꢦoꢧꢝꢎꢧd
- pꢮꢯiꢰꢡꢱ
- inꢎcꢉivꢎꢉꢲ with ꢳꢂmꢎꢴꢊꢋ ꢎꢋd bottꢀꢲꢵ
- ce ꢉhꢟꢉ ꢣhe viruꢘ hꢎd ꢁen iꢑꢀꢶvꢎꢷꢸ ꢖouꢀd
- Aꢤꢤuꢂaꢄ
ꢹ demoꢺꢻꢥꢎted by ꢜowth iꢋ ꢣiꢤꢤꢮꢼ cuꢀꢉure. Wiꣁhiꢋ five yearꢤ aſtꢪꢯ the Endeꢂꢘ' ꢽꢪꢕꢾꢿ ꢀarge-ꢤcꢎꢀe fieꢀd ꣀꢎꢀꢠ were ꢟꢀꢧeꢟdy uꢺderwꢎy ꢎnd iꢋ 19S5 ꢉhe ꢊꢋꢎcꣁivꢎꢉꢲꣂ ꢻo-calꢴed ꣃ꣄ vꢎcꢖꢅne ꢝꣅ ꢀiꢖeꢺꢘed ꢳr uꢗ
3
- Eventually, hꢀ selecꢃed ꢃhrꢀe cꢔndidꢂte ꢈꢃꢖꢂꢅnꢈ, plꢂqꢊꢀ-puifiꢀd ꢃhem ꢔnd
- rꢀꢁꢂꢃedly
- ꢃꢀꢌtꢀd them for virulꢀncꢀ in mꢚꢨkꢀyꢈ ꢂnd chꢰmpꢔnzꢠꢀꢈ.
- Smꢂꢝl-ꢈcꢂlꢀ ꢄꢅꢆꢇꢈ ꢅ ꢉꢊmꢋꢌ
prꢚvꢀd ꢍꢊꢎcꢀꢏꢈꢐꢑ bt ꢃꢚ ꢔꢍꢈꢠꢈꢈ ꢂdꢠqꢊꢔtꢀly ꢒꢃh ꢀtfꢓcꢂcy ꢔꢨd ꢈꢔfety, lꢔrgꢀ-ꢈcꢂꢇꢀ ꢄꢓꢔlꢌ
- iꢹvꢚlvꢅꢨꢶ
- hꢕdꢖꢀdꢈ ꢚf ꢃhꢚꢊꢍaꢨdꢈ ꢚf ꢉuꢱꢔn ꢈꢊbjectꢌ werꢀ nꢀeded . Neꢅꢃhꢀr hꢀ Uꢨiꢃꢀd
- Sꢃateꢌ nꢚr mꢚsꢃ ꢚf weꢈteꢗ ꢘuꢙꢚꢛ were suitꢔblꢀ ꢈiꢃꢀs.
- Thꢀ Sꢜꢝꢞ vꢧcciꢹꢀ wꢧs, by thꢀn, i
- us꣑ ꢂnd ꢨvꢂccinꢂꢃꢀd ꢈꢈꢩꢀpꢃiblꢀ cꢉꢰldꢢꢀn wꢀꢢꢀ cꢚꢱpꢔrꢂꢃivꢀly fꢀw. Dꢀvꢀlꢚpinꢶ
- widꢀꢈpꢢeꢂd
- cꢚꢊꢨꢃrꢅeꢈ weꢢꢀ
- unꢍꢂtꢅꢈfactꢚry ꢟcꢂꢊꢍꢠ ꢚf ꢃꢉꢀ wꢰdꢀꢈpꢢꢀꢔd prꢀvꢔꢑꢀncꢀ ꢚf nꢂꢃurꢔl ꢰnfꢠcꢃiꢚ ꢂꢃ
- Eꢂꢍꢃꢀꢡ Euꢢꢚꢣ, hꢚwevꢀr, ꢚffꢀꢯꢀd ꢂ foꢯꢃuiꢃꢚuꢈ ꢚppꢚꢢꢃuniꢃy and, ꢅ 1956,
- vꢀꢖy ꢀarly ꢧgꢀꢈ.
Sꢂbꢅn beꢶꢔn ꢂ pꢢꢚdcꢃꢰvꢀ cꢚllꢂbꢚrꢂtiꢚn wꢰꢃꢉ Acꢂdꢀꢱꢅcꢅꢔ Mikhaꢅl Cꢉuꢱꢚkꢚv, ꢃhꢀ Dꢓrꢀcꢃꢚr
- ꢚf ꢂ nꢀw Iꢨꢈtiꢃꢊtꢀ ꢤr Pꢚliꢚmyꢀliꢃiꢈ Rꢀꢈꢀaꢯcꢉ i Mꢚꢌcꢚw.
- Iꢃ wꢔꢌ ꢂ cꢚllꢂꢥrꢆtiꢚn whicꢉ
- By ꢃhꢀ ꢀnd ꢚf 1959, ꢱꢚꢢꢀ thꢂ 15
- uꢨꢓquꢀly, for thꢀ ꢀꢂ, ꢦꢧꢨꢈꢩꢀndꢀd thꢀ Iꢢꢚn Cꢪꢫ
- ꢺeꢙꢌꢚꢨꣂ in ꢃhe
- ꢱꢓllꢅꢚꢨs
- USSR had recꢀived vaccꢅꢹꢀ in fiꢀꢇd ꢬꢅꢧlꢌꢭ (Agꢚl ad Dꢯꢚzdꢚ꣐,
- 1993) Iꢃ pꢢꢚved tꢚ bꢀ ꢮꢃꢉ ꢀffecꢃive ꢧnd sꢔfꢀ.
- Baꢍꢀd pꢯꢰꢱꢔꢲly ꢚn ꢃꢉꢀꣂ꣑ Ruꣂꢈꢅaꢹ dꢂꢃꢂ, thꢀ
wꢈ liꢩꢀnꢈꢀd vꢂccꢅnꢀ foꢢ us꣑ ꢓ tꢉꢀ Uniꢃꢠd Sꢃꢂtꢀꢈ i 1962.
A vꢂccꢅꢀ wꢉꢰcꢉ cꢚꢊld ꢳ ꢶive ꢚꢖꢆlly - ꢃꢉe ꢴ such vaꢩcꢓꢀ ꢀvꢀr t꣄ ꢳ liꢀnꢵ
- - ꢚꢁnꢀd new pꢚꢈꢈꢅbilꢅꢃꢅꢀꢈ for lꢔꢯꢶeꢷꢸꢀ ꢅmmꢊꢨizaꢃꢰꢚn. Thꢚuꢶꢉꢚuꢃ thꢀ
- 950ꢈ, ꢃꢉꢀꢢꢀ ꢉꢔd
- l
- ꢧnd ꢼꢹ ꢚꢃꢉꢀꢖ coꢊꢹꢾꢿꢀꢌ, ꢃꢚ maꣂꢌ ꢩꢧꢱpꢧꣀꣁꣂ usꢿꢹg
- ꢚꢺꢻsꢼꢃꢅꢚꢽ bꢚꢃh ꢓꢹ ꢃhꢀ UꢭS.
- ꢳꢀꢹ
- thꢀ Slk
- vꢂcꢩꢰꢀ. Tꢉꢀ mꢀdiꢩꢂl cꢚꢱmuniꢃy ꢰꢍꢰꢍtꢀd ꢚn ꢓnꣅlꢂtꢅꢚn ꢳꢓ dꢱꢅꢅꢀr
- ꣃlꢅ꣄
ꢁ꣎nꢔ꣏ly by ꢂ quꢆlifiꢀd pꢉyꢈicꢅꢔn ꢚꢢ undꢀr ꢉꢅꢈ clꢚꢈꢀ ꢌꢁꢢ꣐ꢓꢈꢅꢚn ꢔnd tꢉꢀrꢀ ꢈiꢱply wꢀrꢀ nꢚt ꢀnꢚꢊgꢉ pꢉyꢈꢅcꢅꢔnꢈ ꢚr iꢹtꢀrꢀsꢃ ꢃꢚ ꢁꢢꢱiꢃ ꢔꢹ ꢓntꢀnsꢰvꢀ ꢇꢔrꢶꢀ-ꢈꢩꢂJꢀ ꢀffꢚꢢꢃ. Orꢆl vꢂcciꢀ otꢔlly
Lꢅttlꢀ pꢢꢚfꢀꢈꢈꢼꢚnꢆꢇ ꢀxꢁꢢꢃꢅ꣑ waꢈ ꢢꢀquꢅ꣒ ꢚ assuꢀ ꢃꢉꢂꢃ ꢃwꢚ drꢚpꢌ ꣄f
ꢇꢃꢀꢢꢀd ꢃꢉꢀ caꢇcꢊluꢌ.
5
- able
- ꢒnd prepa꣄ed to play the role of ꢀieꢁtꢂsꢃ, advocꢘte, ꢄliꢅicꢆanꢇ cꢥꢏꢊician ꢈd
epꢦdemꢏoꢥogisꢠ iꢊ trꢉꢊꢋꢌꢍꢊꢎng a concepꢠ iꢊꢅo p꣄actꢆcꢒl ꣄꣫aꢥi꣪y.
Tꣀe Gꢥobal Challenge
- e widespreꢉd usꢛ of o꣦ꢉ꣎
- ꢄlꢏovaꢐꢐiꢊe iꢊ ꢰꢽe pꢑmꢒꢓꢔlꢕ ꢖopꢗcꢘl developꢏꢊg
ꢜ rꢝaꢞlꢛd ꢠhaꢠ, unꢰꢔl ꢭhe 1970sꢇ ꢄlio waꢋ coꢙnꢚies ꢄsꢛd ꢠꣀe ꢫlꢠimaꢠe cꢽalleꢊge. It sꢽould
ꢠꢽougꢽꢠ ꢅo ꢜ ꢉꢊ iꢊcoꢁꢟueꢊꢠiꢒꢞ p꣧obꢥem for ꢠhe developing wo꣦ld꣙ (Sabꢏꢊ. 1981) geꢊerꢉllꢕ
- Mosꢠ sꢙcꢽ coꢙꢊꢡꢏes re꣐o꣧ded
- few cꢉꢢsꢣ In pꢉ꣧ꢠ, deficꢏeꢅ repor꣪ꢗng wꢤ resꢄnsꢆbꢥe buꢠ
epidemꢏologists posꢭꢫ꣎atꢛd also ꢠhaꢭ ꢦꢱ ꢠꢽesꢛ ꢐoꢙnꢚꢦes almosꢅ all cꢽiꢥd꣧en ꢧcꢉꢨe iꢁfecꢅꢛd
- so ꣫ꢘ꣄ly iꢊ life ꣪haꢠ vꢩly a꣎ꢥ develoꢪd ꢏꢨꢨꢫꢬꢭꢕ wiꢮouꢠ pa꣄aꢥꢕsis.
- Polio ꢦꢨmꢯꢰꢔoꢊ
ꢊoꢭ coꢊsidered ꢠo ꢜ a ꣀꢆgꢽ prꢆo꣦i꣪y aꢊd, ꢔꢱdꢲꢳ ꢉs of 1975,
꣪hꢙ leꢴ ꢃhaꢊ 5 ꢵrcꢛꢊꢠ of wꢤ
- cꢽiꢥdreꢊ ꢗꢊ ꢠꢽe .develop꣡ꢊg worꢥd were ꣦eceivꢏng ꢄliovacꢶꢆꢊeꢷ
- Durꢆng ꢭhe earꢥꢕ l970s
- ꢽoweverꢇ "lꢉꢨeꢊe꣖s su꣧veys" begꢒ꣑
- ꢧ cꣁꢊducꢠed, ꢸꢹꢠ ꢗꢊ
- Iꢊdoꢊesia a꣑d Gꢽaꢊa ꢉꢊd laꢠeꢓ
- ꢠo
ꢼꢽeꢾ su꣧veys of ꢿꣀꣁꣂl chꢆꢥdreꢊ ꢨ꣫asured ꣪ꢽe p꣣ꢛvꢒle꣑꣐ꢛ of leg
- ꢺoꢫꢁꢚꢔesꢻ
- i꣑ oꢠher
- cꢽꢉ꣄acꢠe꣄isꣅc of rꢛsꢏdꢙal ꢄlꢆo pꢉ꣦aꢞꢕsis.
- wꢛaꣃess
- urꢔsiꢊgꢞꢕ ꢠꢽe sueꢕs wꢽerevꢛꢓ
꣐oꢊducꢠed, revꢛaled raꢠes wꢽꢎcꢽ we꣧e as ꢽꢔgꢽ as iꢊ ꢰhe ꢔdꢫꢏa꣎ꢔ꣏ ꣐oꢙ꣑ꢔes before
- ꢜ꣐ame avaꢔlable. (Nicꢽolꢉs, K꣄a꣒꣄ꢇ Ofoꢙ-Ammah ꢈd Belcꢽe, 1977) e
- va꣐꣐ꢔe
ꢺoꢨplacꢛꢊcꢕ wiꢠh whicꢽ ꢄlio had ꣓ꢊ view꣔ iꢊ the developiꢊg ꢺꣂu꣑꣕e꣖ w꣗ sꢽaꢠꢠeꢓ꣘꣙
- Baꢙꢾ of ꢠꣀe dgs orꢘꢥ ꣠l꣡ꣁvꢒꢺꢺ꣡꣢e wꢘs
- o꣑e of six aꢊꢅigeꢊs sꢛꢥecꢅ꣫d i 1974
- ꢠꢽe World Heꢉlth O꣣gꢒ꣤atoꢱ (WHO) to ꣥ ꣡nco꣦ꢄ꣧aꢭ꣘ ꢏ꣑ a ꢊew gꢥobꢉl p꣣og꣣ꢒm ꣨r
- by
however wꢽo exp꣣꣫ꢋ꣬ sk꣫pꢠici꣭ a꣮uꢠ ꢭꢽe iꢨꢨꢫni꣩꣪ionꢣ There were mꢘnꢕ
7
health officꢕaꢶs in the Americꢵs appꢶauded the effort buꢡ ꢀw ꢶꢕꢄꢡꢶe hoꢁ ꢂꢃ ꢮoꢜꢒꢝiꢢg a
- ꢄyꢁ of cꢵmpaꢕgꢒ ꢨꢒ a ꢢoꢢ-ꢡoꢡaꢶꢕꢝaꢋꢨꢵꢒ ꢏꢝaꢡe.
- sꢨꢮꢕꢶar
- Coꢜꢶd
- ꢇ,
- a ꢢaꢡꢨonwꢕde cꢰꢮpaꢨgꢒ bꢣ coꢢducꢡed ꢕꢒ a
- couꢅꢆy oꢝꣅeꢃ ꢄhꢵꢢ Cuba aꢒd, if
ꢕꢡ
- ꢮꢸghꢡ have? Bꢃꢈꢉ sooꢢ pꢃovꢕded aꢒ anwꢓ꣨.
- whaꢡ effecꢡ
- As of 1980, ꢊꢋꢌꢍꢎ'ꢏ ꢋꢐuꢑꢒꢓ
pꢃogꢵꢮ wꢵꢏ
- aꢔg
- coꢦerage of ꢶeꢗ thaꢒ 50%, deꢗpꢕꢡe wꢕdꢖꢗpꢘꢙd
- ꢦaccꢨꢒꢵꢡꢕoꢢ
- ꢎeꢦeꢶꢏ of
pꢃograꢮꢏ deꢏꢕꢚed ꢡo educaꢡe aꢅd ꢮotiꢦaꢡe tꣅe ꢛpꢜꢎaꢝꢞoꢟ aꢠuꢡ ꢡhe ꢢꢣꢤ ꢥꢃ ꢦacꢧꢨnaꢩoꢒꢪ
- ꢊrꢵzꢕꢎꢕꢵꢒ hꢖaꢉtꣅ ꢗꢝaff reꢦertꢣd ꢡo a ꢮꢵꢏs caꢮꢯꢰꢞꢱ ꢗꢆꢰꢡegyꢲ oꢢe which
- Iꢒ ꢫuꢏꢬaꢡꢕoꢢꢭ
- heꢿ
hꢰd ꢁꢘꢳecꢡꢣd dꢴg ꢡꣅe ꢏꢮꢵꢶꢎꢷx eꢃadꢨcaꢡꢨoꢢ campaꢸꢹꢺ ey dꢻꢕded ꢡo oꢘꢾꢵꢢꢕze two ꢒaꢡꢨoꢢꢵꢉ ꢕmꢮꢜꢒꢨzꢵꢡꢨoꢒ dꢰyꢏ each yꢓꢵ꣨. (Rꢨꢗꢕꣴ 1984) Iꢒ 1980, ꢮore thaꢢ 300,000 coꢮꢮuꢢity
- uꢡꢕꢼꢨꢽꢢꢾ 90000 ꢦaccꢕnaꢡꢨoꢢ poꢗꢡs, ꢦaccꢕnaꢡed ꢏoꢮe 20 ꢮiꢉlꢕoꢢ chꢕꢎdꢃeꢢ uꢒde 5
- ꢦoꢼꢜꢒꢡeꢖꢃꢗ
oꢒ each of two Naꢡꢕoꢢꢰꢼ
ꢿeꣀs
ꢄꣅꢕꢏ age
Iꢮꢮꢜnꢨzꢵꢡꢕoꢒ Days. Thꢕꢏ ꢃepꢃeꢏeꢒꢡꢤ aꢠuꢡ 90% of chꢞꢎdeꢢ
- Aꢢd
- tꣅꢕ haꢗ ꣂeꢒ ꢝhe pracꢡꢨce eꢦey yeaꢃ sꢨꢒꣳeꢪ The ꢃeꢏuꢎꣃ weꢃe
- ꣁoup.
- ꢞꢒ
dꢵꢮaꢡic. Re꣭orted caꢣꢏ proꢮptꢼy dꢃoppꢣd ꣄oꢮ ꢮoe ꢄꣅ 20 ꢁ yꢣꢵꢃ to oꢃ ꢎ ꢰꢒd ꢮoꢗt of ꢏouꢝꣅe ꢊ꣎ꢈꢎ ꣏came ꣐ꢎꢨo꣑ꢫ꣒.
- Meꢵꢒwhꢕꢎe, wꢕꢄh ꢶeaderꢏhꢞp ꣓oꢮ tꣅe Pa꣧ Amerꢸca꣧ Health ꣔g꣕oꢟ (P
- AHO)
\
ꢯoꢾ꣎ꢵꢮꢗ ꣖ ꢕ꣗muꢒ꣘꣙ꢕꢢ ꢄhrughuꢡ ꣅe Aꢮericꢵs hꢵd pꢃoesꢕꢦeꢎy ꢕꢮpoꢦꢤꢪ Poꢎio
- iꢟꣳꢕdeꢒce ꢎꢶ teꢰdiꢎꢿ ꢵꢒd,
- ꣤꣧ 1985, the couꢢes a꣠ thaꢡ ꢰ hemisphe꣨e-wide eꢃꢰdꢞ꣡꣢oꢟ
- shouꢶd ꣣ ꢜꢢderꢡꢵkeꢒ wꢕꢡꣅ the objectiꢦe of ꣤ꢒꢡe꣥ꢃꢜp꣦꣧ꢾ ꢷꢶioꢦꢞ꣨꣩ ꣪꣫ꢞo꣧ bꢿ
- effo꣨t
꣬eceꢮꣂꢃ 1990. (de Quadoꢭ eꢡ aꢶ. 1991) This ꣭꣎꣮꣗ bke ꣰ew ꣯u꣰d iꢒ pubꢎic
ꢕꢢ ꢕꢡs ꢜ꣱ of epꢕdeꢮꢞoꢎogy ꢡo ꢾꢜꢞde sꣲꢰꢡeꢾy ꢵꢒd tꢰꣳ꣦ꣳꢏꣴ ꢕꢢ ꢕꣃ iꢢꢦoꢎꢦeꢮeꢢꢡ of heaꢎtꣅ
9
- program and to ꢀeꢁꢂꢃ iꢄs findꢇngꢘ
- ꢄo ꢄhe Inꢄeꢅꢆꢇonal Coꢤꢤiꢘꢘion.
On Sepꢄemꢈꢉ 29,
1994, the Inꢄeꢊaꢄꢇonaꢋ Coꢤꢤiꢘꢘꢇon, ꢌer furtheꢀ deꢍiꢈꢎaꢄionꢏ ꢎeꢁrꢐed finally ꢆo ꢆhe
- Mꢇniꢘꢄerꢘ
- "Bꢒd on ꢄhe ꢩꢙpꢀeꢘꢘꢇve
- of Heaꢍꢆh of ꢑe Pꢜn Aꢙericꢜn Hꢗꢋꢄh Conference:
evidenꢢe ꢘubmꢇꢄꢄed, ꢄhe ICCPE ꢢonꢠꢋudeꢘ thaꢄ wiꢋd ꢓꢋiovirꢔꢕ ꢖꢗnꢘꢙiꢘꢘꢇon hꢜꢘ ꢈen ꢇnꢄerrꢔpꢐed ꢇn ꢄhe Aꢙerꢠas."
Sꢚꢛꢜꢄeꢝ ꢜꢶd Tꢜcꢐicꢘ in Polio Erꢜdicꢜꢄion
The fiꢀꢘꢆ ꢀeqꢔꢇreꢙenꢄ for
- eꢀadicꢜꢄꢇon ꢞꢉoꢟ iꢘ ꢜ coꢙꢙꢇtꢙenꢄ ꢹy aꢍꢋ ꢆhe
- an
ꢢoꢔnꢄꢀꢇeꢘ ꢠonꢠeꢡed both ꢆo ꢔndertake needed efforꢆꢘ in ꢄheꢩr cooꢞerate wꢇꢐh otherꢘ iꢶ ꢢooꢛdinated heꢤꢇꢘphere-wꢇde acꢐiviꢄieꢘ. own counꢖꢇeꢘ ꢜnd ꢄo